At the same time I think Islamophobia is real and pernicious and probably much more of a problem than e.g. antisemitism in the UK (again, surveys bear this out). Perhaps we simply shouldn't ask such questions about Islam for fear of stoking such prejudice. On the other hand, perhaps liberals self-censoring - deliberately avoiding mentioning such facts or asking such questions - actually stokes Islamophobia by, in effect, stifling free speech re Islam and also feeding the 'double standard' narrative (that Christianity/Christians, on the other hand, can be called anti-gay with impunity [but then Christians aren't being discriminated against or vilified in the way Muslims are]).
Personally, at this point, I don't think Goldblum did anything wrong - though you might yet persuade me I'm mistaken about that.
What annoys me most, actually, is the hysterical witch-finder finger pointing being directed against him. Even if he was wrong, I think he's probably a good person and had good intentions (he may even have been inviting the contestant to challenge that view), and attempting to smear him as a bigot probably helps no one in the long run (though it may give his accusers a little short-term holier-then-thou rush).