The claim in the headline there is "half of the Muslim world", not "half of the middle east" as you commented.
Deeper in the thread there's a link to https://fellowshipoftheminds.com/2015/07/17/half-of-worlds-m... with some statistics as well as spitballing at a cause (Koran is okay with cousin marriage would seem to be a big one) - and if you're having babies with your cousin, that is objectively inbreeding.
At best, this is arguably a statement of fact, and not "bigoted" or "hateful". Neither is a general sentiment that Islam is negative or hateful.
That's not true at all, the thread title very much says Arab not muslim. That is specifically a term for the middle-east. Also, that article seems to pull the numbers out of its ass without any proof. I'll stick with the actual numbers I posted, which means it is not a statement of fact. It is an exaggeration at the expense of Arabs.
Which is basically where your argument falls apart for BOTH links I posted. Because that's how The_Donald gets away with bigotry: it posts vague "factoids" that overblow a situation to let users make the desired conclusion but create plausible deniability once the users start posting them. You know it wasn't that long after before someone posted something like this: https://www.reddit.com/r/The_Donald/comments/6p7do4/hard_fac...
Turns out, when your sub is constantly suggesting a whole demographic of people are retarded without literally saying it, the users eventually make the connection and start believing it. Ironically that may be breaking down soon when such a ridiculous post like that managed +710, probably due to recent events causing desperation. (Also before you say "buts that's only Somalis!" OP was kind enough to elaborate in the comments that he's talking about Arabian immigrants too).
Either way last post, feel free to have last comment. This thread is probably dead now and now I can definitely tell you're not honest. This conversation is basically pointless.