peace Hamzeh, all,
Re: capitalising "I" in islam
It is and it isn't a big deal. You seem like an intelligent brother hence I was surprised at your usage, that's all. Let me explain...
"Islam" with a capital "I" is a title (or proper noun) - however that is NOT its primary signification.
It is primarily an ordinary Arabic noun/word with a meaning (~submission/peacemaking), just like thousands of other ordinary Arabic nouns.
Before Al Quran was revealed all the words used in it already existed, including "islam". There is nothing special about the word "islam", thus does not require capitalisation.
Unfortunately, it has become common practice to give ordinary Arabic words special religious significance and capitalise them into titles, e.g. islam, muslim.
islam is an ordinary word meaning peacemaking/submission, and it is an inclusive word that can encompass various monotheists under its banner.
Islam is the title of a religion, which may or may not reflect the original word meaning, and commonly refers to an exclusive religion.
This capitalisation of islam/muslim can lead to a few issues:
it helps conceal the original meaning of the word
it leads to the contradictory statement that one be Muslim but not muslim
Potentially conflicts with The Quran's universal message, e.g. many messengers used the equivalent word to "muslim" in their own language prior to Quran [2:128, 2:131, 3:67, 3:52, 5:111, 10:72]. Think about whatever word they used in their own languages - would you also class these as special words requiring capitals? The meaning of the word is important, i.e. do you embody the meaning of the word?.
Also, it implies other monotheists cannot be muslim when they could be classed as such according to its original Arabic meaning, which makes sense with various verses, e.g. 2:62.
Surely those who believe, and those who are Jews, and the Nazarenes, and the Sabians, whoever believes in God and the Last day and does good, they shall have their reward from their Lord, and there is no fear upon them, nor shall they grieve. [2:62]
In other words, it doesn't matter what one labels themselves as, labels/titles are not important, it's what you believe in and what you do is important.
Background:
http://www.misconceptions-about-islam.com/more.htmhttps://free-minds.org/muminsThe only counter-argument to this is 22:78, but this is fine as long as one appreciates its primary signification is in its meaning not as a title.
Again, I don't consider it a big deal as long as one appreciates in your usage it's bit of a misnomer.