Peace Mohammed
Im sure the ones who have been sharing the articles with other brothers and sisters have gone through the articles with great research and have also taken other opinions in consideration before they share.
Also please understand and go review your work how many times you have been giving advice and conclusions on certain topics and then have come back and said you are wrong this is the correct meaning. You could of made false conclusions which some might of taken from you and left them in that thought while you had realized you were wrong but did not have the chance to correct them. This is a serious matter and you should not be tempering with the meaning of the verses without cross examining them before you have made up your mind with supporting verses. This is not how one teaches people. God did indeed give people reason and intellect Alhamdulila. But some times its better to read from those who have the ability to illustrate and share the message of the Quran Masha'Allah and compare them with others and choose the best meaning based on the verses of the Quran and the approach one takes through intellect, honesty, and academics.
39:018 "Those who listen to the Word (the Quran) and follow the best meaning in it / best of it (Arabic: fayattabi'una ahsanahu) those are the ones whom God has guided and those are the one's endowed with understanding (Arabic: Albabi)
The brother who started this site has his articles in detail and has correlated much of the topics together to illustrate the consistency of the Quran and its message Masha'Allah. He also follows up with questions being asked exhaustively for almost every topic from his critics. We have read the arguments and questioned them and also hear of other peoples opinions and we try to simply help by sharing what has been made evident to us and to try our best to see where the confusion is and try to resolve it Insha'Allah.
I personally do not think one should try to be giving conclusions if one has not taken the effort to study the Quran in a whole and has studied it thoroughly. This would be evident by the persons speeches, writings, arguments etc.
I think this site should most times be used more appropriately for challenging the arguments made in the articles rather than throwing out messages that are hard to support and confuses people. That leaves us with the problem of "where does one begin to argue from?"
As a result as brother Duster has kindly suggested that you read the articles to get an understanding of who are the people of the book?, who is a kaffir?, an article that illustrates that the "dean" is the same but the "sharias" are different, etc
I agree with brother Duster as it could get very hard to respond to questions that are not correlated with the message of the Quran, so often we understand that a brother or sister is struggling with a topic because of a small issue so we refer them to a article that could resolve that thought and straighten out the full message and make it overall consistent. This is not wrong and is not to be deemed as following others without verification. Sometimes there is no need to re-define truth when first it cannot be put any better or when it cannot be proven false.
Regarding the topic now I would also like to make a couple more comments that might resolve our thoughts incase they were a little unclear,
Yes we do believe that the people of the book should also believe in the Quran.
But those that have held fast to their own scripture and follow it correctly and have faith in it which there is arguably many, are still muslims. How could they be not? They are believing in God's words. Those same believers would arguably also believe in my humble opinion in the Quran. How could they not? They have believed in their scripture based on the arguments so why not the Quran, it is a confirmation of what is with them. They might not call them selves "muslims" but they would be deemed equivalent in God's view.
These are explicit in these verses,
2.62 "Indeed, those who believe, and those who are Jews, and the Christians and the Sabians, any who believe in God and the Last Day, and work righteousness, shall have their reward with their Lord; on them shall be no fear, nor shall they grieve."
5.69 "Indeed, those who believe, and those who are Jews, and the Sabians and the Christians, any who believe in God and the Last Day, and work righteousness,- on them shall be no fear, nor shall they grieve."
There is also disbelievers from the Jews and Christians who do not even believe in their Scriptures. They say they do, but they don't.
5:41 O Messenger, let them not grieve you who hasten into disbelief of those who say, "We believe" with their mouths, but their hearts believe not, and from among the Jews. [They are] avid listeners to falsehood, listening to another people who have not come to you. They distort words beyond their [proper] usages, saying "If you are given this, take it; but if you are not given it, then beware." But he for whom Allah intends fitnah - never will you possess [power to do] for him a thing against Allah . Those are the ones for whom Allah does not intend to purify their hearts. For them in this world is disgrace, and for them in the Hereafter is a great punishment.
5:42 [They are] avid listeners to falsehood, devourers of [what is] unlawful. So if they come to you, [O Muhammad], judge between them or turn away from them. And if you turn away from them - never will they harm you at all. And if you judge, judge between them with justice. Indeed, Allah loves those who act justly.
5:43 But how is it that they come to you for judgement while they have the Torah, in which is the judgement of Allah ? Then they turn away, [even] after that; but those are not [in fact] believers.
If Jews or Christians who deny the truth after the knowledge comes to them then they would be disbelievers. There is also warnings to them in the Quran as you have kindly shared as well through some of the verses. We do not deny this. They are expected to believe in the final Scripture. However please note that believing in the final Scripture and abiding by its laws are two different things. Even todays Muslims, if a misconception or ideology or doctrine has been made clear to them and the truth has come to them with knowledge and do not accept it, one maybe arguably stepping on the side of kuffur.
Now regarding marriage with the people of the book, the context of verse 5:5 is clear. These are people of the book that are following the true deen. This is also verified by how we are able to eat from their food and they may eat from our food(two different categories are considered), other wise if God had commanded them to give up their names and laws, their food would arguably not be lawful for us and would have command them to only eat from the food that has been made newly permissible to the new believers. But the verse is speaking to both the new believers and the people of the book. It is explaining to the people of the book that the restrictions(for example the fat of the animals6:146) that has been once imposed on them is now lifted off them as they are believers in the Quran. But this also gives them the freedom to remain true to their covenant to God through their respective scriptures and follow what was given to them. 5:44, 5:45.
Peace