Some of us are not masochists at heart, and value the ability to switch between a GUI for my desktop things and a virtualized Linux image for development/testing.
I’m very much a person who values technology that “just works”. While my latest Ubuntu installation admittedly wasn’t quite as smooth as running macOS on Apple hardware, the gap has narrowed considerably. Especially for anyone who already possesses a fair amount of Linux experience from working with servers for work, and who sticks with known-compatible hardware, running a Linux desktop can be a delight.
UI jank is also reduced but not eliminated. Even Pop!/DE Ubuntu have a fair number of rough edges - not so much that you're constantly tearing your hair out, but there's definite room for improvement. Personally, I live with it because I also think Windows and OSX have regressed in usability and stability, but I'd be a liar if I didn't mention all the time spent yelling at things like DPI scaling w/ hardware dock-attached monitors.
e: also, expect to do some manual power tuning if you want anything close to battery life parity.
I find the overall UX quite good (Microsoft RD + Microsoft VS Code) and the fact that I do not have relevant data on the Macs allows me to hop from office to home, and second homes without having to carry a laptop.