In a word, incendiary, but this should come as no surprise.
Chappelle has always been more interested in social commentary and justice than comedy, per se.
That being said, he undermines his message by preceding what is meant to be his 'truth' wrapped inside a 'joke' by statements like, "I say mean stuff because it's funny."
In truth, 0 x 10 = 0. The mean often hijacks the funny, leaving very little left to hear.
However, he lands several strong points about hypocrisy, self-righteousness, political correctness, cancel culture, and 'punching down' in today's day and age. One can only hope those points are what people remember, rather than the incendiary remarks surrounding them.
I'm not sure to what extent comedian Louis C.K. will ever successfully rehabilitate his career after so much hate speech, so one wonders where the line is between those of his ilk and, say, Chris Rock and Dave Chappelle.
The line is there, somewhere, and we know it when we see it...though it's scratched in sand, and therefore always floating before being altogether erased and needing to be redrawn.
Question immemorial: Who draws it next?