This is an extremely odd call. Also, how the hell am I supposed to prove anything here? Where do you even get data like that? That's my whole point, that this seems like some dude on the internet making some wonky proclamation. You want quality discourse? Then the person making such a claim needs to provide some receipts or else everyone else has to work twice as hard as he does to keep up with his bullshit.

I'm not making any claims about where vegetarians do or don't live, and it seems pretty bold to throw something out like stating where most people of such a diverse group live.