I'm annoyed that people graduate elementary school. It used to be expected and people said "Good, now get ready for junior high school."

He's getting better, or maybe as you say they're writing to his strengths and weaknesses. Regardless I'm glad he's not the center of the show anymore. The adults do quite fine carrying the show.

"less interested in race-related conflict"

Yes, i agree. I thought he was the least likable or interesting character the first few episodes, I thought they were better without him. Now that it's restructured slightly it's much better.