Ignoring all the other bad stuff with Windows 11, one thing that made me switch to Linux was the ugly "modern" design. iirc, someone on HN said that Windows designers don't even use Windows, they use Mac.

But then I switched to Linux and a lot of apps, specially gnome and gnome-inspired apps, have such terrible design as well. I'm going to spare you the details because I could rant about it for hours.