The 1989 Batman had a very Burton-esque flavour to it, but Batman Returns is not only very theatrical yet also pure umistakably Tim Burton. Everything is exaggerated and over exaggerated. There is no subtlety whatsoever. Watching this is like watching a live-action cartoon, and in this context I don’t mean that in a good way.
My understanding is that after the success of the first film, Burton was given more freedom with the second, which is why it looks even more Burton-esque. I liked it when I first saw it too, but looking back, it's a bit much. I agree on that. And what was with the slush that looked like whipcream?