I think the Joker is an imaginary scapegoat. He is an attempt by the liberal entertainment at explaining away the evils of capitalism, by putting the blame at unrealistic “individuals with irrational minds” rather than realistic people in realistic circumstances.
He is also a symbol of violent anarchism, through which the media obscure the true solution that is revolution and abolishment of capitalist institutions.
Sometimes, it’s worse than ban. It’s shadow ban.
I have a feeling that YouTube has this particular behavior where, if my comment was simple and trollish, it’s visible for everyone to see. But if it contains proper analysis that combat the propaganda, it’s invisible.