Every single character on that show is a stereotype. That's kinda the point. It makes fun of how we stereotype people.
The Simpsons are just deciding what market they want to cater to. I was their original market, but stopped watching years ago. I suspect they are trying to lure in the GenZ kids, with edgy, but not TOO edgy, comedy. Playing the middle is hard. Soft enough parents will let their pre-teens watch, but still "adult" enough to compete with the successful spinoffs on the cable-only channels.
Yes.
All the characters are stereotypes.
But I guess it's okay to make fun of them.