Such a person would almost certainly be wary of engaging in debate, however open and honest, with someone who came to their strong conclusions in the face of such easily available evidence to the contrary. You also have to remember that some people use the framework of an open and honest discussion to proselytize, or rant. The archetypical bigot who “wants a fair debate about immigration” while really just wanting to express their bigotry without getting heat for it is one example. The antisemite who talks in terms of “bankers” and “globalists” is another. It’s unfair, but we all have to share a world with them, and so even when we really want to have an open and honest conversation we have to go that extra mile to prove it in cases like these. Otherwise people who don’t act in good faith can effectively mount a DOS on our time and attention through our goodwill.
Edit: Downvotes in lieu of something to say is something I’m becoming depressingly familiar with here. I can see why some people revert to low-effort posting when it’s going to be met with zero-effort. Oh well, I’m not sure what I expected.
Disclaimer: I’m not Muslim, or from the regions described.