Who is Allah? (Have I become your enemy because I tell you the truth?)

Yes, however, semantics is important as we need to discuss things on common terms.

However, it can often become a sticking point.

Too true sometimes. It is often the cause of misunderstanding and resentment too. A pity to be sure.

I find it funny that despite the historical fact that Allah was the name of the Arabic Moon God from a previous polytheistic Faith, Muslims will still insist on worshipping this historically changing character, and clinging to the claim that Allah is real.

Allah is as real as Yahweh..... and Santa Clause.