I don't compare 'learning Arabic' with 'knowing the so called science of the ahadith doctrines'.
All i am saying is, if you want to know the details of the Quran correctly, then learn Arabic. Reading the Quran on your own in the original form can't be compared with reading any kind of translation.
But you don't need to know Arabic if you want to be saved. I read the Quran, the Gospel, Psalms, the Torah etc. and the Message is and should always be 'love God, love your neighbor, love others as you love yourself'. You don't need to read a Book for that. Everyone already knows that already since it's in our DNA.
Anyways, i think the Quran talks about 3 prayers a day. So do other Scriptures. So for me it's a conclusion i base on the Books. But you are referring to these theories of someone else while the article he wrote isn't even telling in which verses these 5 daily prayers are being spoken of. He is even saying that it could be 3 as well... Do your own research. Don't follow others. You will be responsible for your own actions. So you can't blame others in the end.