Eh iOS is fine UX-wise, but the OS is so buggy now it's unusable. macOS looks weird but works basically fine. I haven't noticed actual changes in my workflow; while on iOS, camera stopped working reliably, wallpapers randomly change to black, alarms randomly don't work.

Maybe it's because I use iOS more, while in macOS I "just" work, which is in reality opening a few Electron apps, a Chrome browser and a Terminal.