I would argue that this is more about the departure / firing of John Lasseter then a side effect of Disney. Lasseter's mandate was to rescue Disney animation, and while Pixar went down a bit, it very clearly re-emerged for a while.

Where Disney is now is more about destroying the parks as cultural touchstones in the USA.

That's a very subjective statement. It's difficult to find evidence for, let alone prove.

IMDB ratings, and even revenue from movies.

Pixar used to work on one movie at a time, and each one that came out was technologically ground breaking[1], a huge media event, and an instant classic beloved by adults and children.

Now days you have https://www.imdb.com/list/ls020738923/

Some of their movies are good, some are great, some aren't good, but now days they are willing to make cash grab sequels.

[1] Siggraph during Pixar release years turned into "what ground breaking tech did Pixar invent this time"

Now it seems like Disney is doing the innovating with the way they film stuff for Disney+.

https://qz.com/1754288/disney-is-trying-to-revolutionize-fil...

https://www.youtube.com/watch?v=bErPsq5kPzE

Though how much of that is Disney and how much is the companies they worked with is unknown to me.

I can't say I agree. Every title is the definition of polished. I just wish they hadn't made millions of children sad with the opening of Up!