He said he was turned off of doing sketch comedy because his own pokings at black culture was basically loved by racist people. He felt like he was trying to lampoon stereotypes but was instead playing to them for the people he disliked the most. He always tells the story of why he stopped with Season 3 when he had some joke with some racist shit and a bunch of white people laughed at the "wrong" part and he was like "Oh. Shit. This isn't what I want."
Honestly he should just lean into it and give it to everyone he wants to. Black, white, asian, trans, gay, whoever. Dish it out to everyone and as long as it's funny fuck the haters.