It’s fine except for the Settings app.
I really just couldn't care less about the change in the settings app. I usually typed something into the Spotlight search area to find what I wanted in the old version, and I do the same thing now. I just didn't have to change settings enough to have remembered their old locations.
Part of this extends from how Apple is implementing security. There are at Lear half a dozen security and accessibility options that all hide similar app lists.
I can see though why long time Mac users would hate it though, it’s a massive change and it moved everything.
Mostly, though, I'm just happy that they're dog-fooding SwiftUI with it. I look forward to WWDC this year.