The fact that the women who wrote the terrible Lilo and Stitch "critique" are actively white supremacist right-wingers is actually very salient and should override any lectures about the specter of the Tumblr SJW.

The far right frequently rejects free-market capitalism and produces its own anticapitalist rhetoric- that generally blames capitalism on Jews.

Would any of the people using this as an excuse to attack social justice as secretly reactionary say anticapitalism is antisemitism?

You can, without looking very hard at all, find instance after instance of right-wingers adopting statements that are superficially similar to left-wing ones. Whether we accept that this irretrievably taints the similar statements has more to do with our preconceptions.