To elaborate on what I mean, Huey feels the most like the author's self-insert. I don't mean it in a derogatory way because Huey is not a Gary Stu; he's sharp and insightful, but also bitter, angry, and aloof. No one likes him and his plans fail because no one will help him or in the Christmas play episode, he abuses anyone who could help him for the sake of his artistic vision. His arc throughout the seasons is him gradually losing hope in reform of any kind, which is why in later seasons, he says he's a retired domestic terrorist. It also doesn't help that plot threads that involve him like the White Shadow don't go anywhere because he's a hard character to write for in a comedy. Which is why after he Morgan Spurlock'd BET, he becomes an ancillary character used either for Blaxploitation purposes (every Kung Fu scene) or to get ignored when giving advice.
McGruder, unwittingly or not, killed the redeemable elements of Black culture by sidelining Huey Freeman. Later seasons consist of Riley or Robert engaging in some short-sighted hedonistic venture that blows up in their faces. Riley, for all his artistic talent, squanders it for edgy gangbanger culture and while episodes starring him insist that he's the protagonist, the problems created are of his own doing AND his arrogance prevents him from becoming a tragic character. How can that be? Because he lacks remorse for his own actions and doesn't learn from them. Robert is milder and closer to being a tragic figure himself, but again, he's also a flat character. His goal is to engage in hook-up culture and engage in get-rich quick schemes. Uncle Ruckus is consistently insane, but he was always meant to not be redeemable in the first place regardless of whatever tragic backstory he got.
The show is ultimately the Black pill for Black people. Nothing gets better, partially due to Wuncler Sr.'s corporate greed, but mainly because Black people can't engage in low-time preference behaviors like saving money, not getting into pointless fights, and studying. Wuncler Sr. takes advantage of them sure, but he's not to blame for their problems.