I've been waiting for a post like this. Every single time I have tried Windows 11 I have fallen in love with the UI and UX. Sure, it can be buggy at times, but that's true with anything. It has always pained me a little bit every time I have to replace it with Linux. KDE Plasma 6 is the closest I've been able to find to Windows 11. Microsoft in my opinion did a really sleek and nice job making Windows 11 pretty, especially compared to Windows 10.
It's a usability nightmare for me. I sure love it when I open a PowerShell prompt, and some random window takes focus instead for no reason. Or when I create a new folder in Explorer, and the address bar inexplicably steals focus.
And that right-click menu can take a long walk off a short pier