My main complaint is that Pixar is starting to make more movies with the main characters being human children. Pixar used to be able to go beyond such things.
Back in the day, the movies used to be about particular things that were in children’s lives like monsters hiding in the closet, toys, cars, bugs, and fish. I remember in my day kids would shout “Look it’s Dory!” every time they saw an aquarium. We don’t have that kind of imagination in Pixar anymore. It’s now about the children themselves rather than the things about their childhood.