conspiracists judge the most obviously evil rich people to be post-facto Jewish on no evidence, so the evil rich people who did the trafficking must have been Jews.

yup. because to conclude that it's just the bourgeoisie in general doing this implicates the white christian anglo saxon bourgeoisie, who can do no wrong. All bourgeoisie must be post-facto made jewish for the purposes of nazi propaganda. They cannot under any circumstances admit that the class struggle is real, and they must substitute it for a false struggle against Jewish people.