They still don't think they're evil though. The illustration is that nobody thinks they're evil because they have zero concept of abstract morality whatsoever. Bad is what good people say is bad and you know who's good because they don't say that bad things are good.

Its a house of cards based entirely on a few somatic feelings about maybe 2 ideas. That's it. People don't have principles and axiom thay they build their worldview out of. They start with a single feeling, and then based on how things interact with that single feeling they decide what things are evil. Its not new, it's troubling for sure, but once you internalize that realization most arguments get really boring really fast