I don't have proof of this, but I strongly suspect that either tinder creates fake profiles or they do a piss poor job of removing fake profiles from their site.

why?

Its hard to tell in the US, but it areas with strong sectarian separation, you see profiles that are just "weird" if not fake.

I.e. I'm in Israel. if I see a profile of someone who wrote their name in hebrew (and a jewishy name at that), but it says they went to Al Quds University it just doesn't make sense. Is it possible? sure, i guess, but it would seem more probable that someone just sicked a profile generator choosing random universities in the general area with pictures from the internet.