Interesting take, I feel like the current iteration of the Windows UI is actually really good. Microsoft seems to be continually tweaking and improving it.
Tweaking, yes. Improving, not so much. If anything, things have been regressing lately - for example, we were able to make taskbar vertical ever since it became a thing in Win7, and it makes perfect sense to do so on any landscape-oriented display for most efficient use of display space. The new redesigned taskbar in Win11 killed that option outright.
With heavy tweaking, 11 is okay... but the standard right click menu is a disaster for power users. And many other settings like the start menu they destroyed.