Gravity Falls is fine except some episodes of the second season, that later turns out they were an excuse for the writer to vent his hang-ups about a former love (no idea about other Cal Arts works like Steven Gayverse, Amphibia, Teen Titans Go and so on, other than being increasingly worse).
Then there are cases like Live Action Stitch, ruined by an ending that contradicts the message of the movie because either the writer is that obsessed with Commiefornia, or because he had issues with his ex-wife, can't recall right now.
Classic Disney works, even if disminished, had good messages and themes that run opposite to all of the petiness and meanness you see in modern works.