I would be curious to see your list of movies, primarily aimed at children, where there are two protagonists who disagree in the beginning and don't end up reconciling in the end.

("Up", which you cited as the last Pixar movie that was 'worth it', is in fact largely a conflicted parent/child relationship)

It reads as if what causes you 'grief' is actually the intended format of the content you are consuming. Yes, it's nice that Wall-E had a layer of critique of rampant consumerism (among other things), but it also had a joke about an unkillable roach too.

My hunch is that the -primary- intended audience for these films spends a lot of time dealing with "conflicted parent/child relationships", and that you are simply not the intended audience.

I don't mean to be overly critical of you here, I think if you take two steps back what you're saying is "the majority of these kids movies don't speak to me."

A movie being "worth it" is pretty different from a movie "speaking to me", which is so subjective that it is hard extract actionable insights from. It's a hop, skip, and a jump from saying "I don't know why you like this flavor of ice cream, because I don't like it."