>>17155946Weirdos started it and it became more mainstream likely because of old 4chan's /b/. Old /b/ hated furries and furries posted their furry shit constantly, endlessly. Mootles gave them their own board.
The internet and furtopia/communities for them helped them grow. That said, not a lot of Jews but I'm sure there are some.
I blame /b/ for traps too (line trap started it all) and for camwhores (chan sluts)