Pixar animated films are more mature and complex than MCU films
Also Pixar villains are better developed than MCU villains. All the maturity of the first Iron Man film has gone. MCU has basically turned into a kid franchise now.
Harry Potter franchise despite being mostly kid oriented has more maturity than MCU will ever have. Even the very first HP movie when Harry was 10 year old had more darkness and dread than any recent MCU flick.