I'm this particular case, I think there is a lot to criticize.
8GB minimum RAM is a lot of requirement for an OS. It makes Microsoft look like they have forgotten what an OS is supposed to be doing.
The floating taskbar might look nice, but to me it looks like they are trying to mimic MacOS or Gnome3. While there's nothing wrong with that, it does seem like Microsoft is not innovating so much as following.
I think many people are just jaded by Microsoft, though. The last couple of releases have been kinda meh and with them dropping support for older hardware entirely and sunsetting support for Windows 10 soon they are leaving a lot of users out to dry.
As a developer who has to support Windows 11 currently, I find the prospect of Windows 12 replacing 10 to be cause for worry. Windows 11 has been a nightmare to support just due to the API not being idempotent with 10. Queries that work in 10 don't work anymore in 11.