But if there were a slur for hypocrites that word would by definition be attacking them for their behavior since hypocrisy is a behavioral choice and not an element of personal identity.

I've actually heard "coon" from a black leftist to refer to black conservatives who try to protect themselves by being "one of the good ones" in the eyes of right-wing racists. The term isn't something I'm comfortable using myself as a white person, but I don't think it's problematic or racist because it's directed at their harmful behavior and not their skin color.