Technically, I’m awed by it. Very cool visually. It’s just when you go to use it that it all falls apart. As you say, they can’t control the content it’s flying over, and thus sometimes it does bad things. But also they rearranged navigation and some other things. I try to keep from rejecting new things just because they are new, but there were some serious usability gaffes in both iOS and iPadOS. Interestingly, macOS doesn’t have the same issues and I’m actually somewhat ambivalent about it.