The post didn't say "when I see a lot of jewish names on buildings I know I'm in a Jewish neighborhood," it said "when I'm in a neighborhood with a lot of names on the buildings I know I'm in a Jewish neighborhood" (both paraphrases to keep the dogwhistly deli->jewish link clear). The implication that Jewish people are uniquely interested in showing off their money and status through naming rights donations seems pretty blatant to me.
Ok, interesting. I would usually be willing to give much more benefit of the doubt, but given how unnecessary the comment seemed to the rest of the post, I guess the obvious conclusion is a dog whistle.
