As a long-time Linux user who fairly recently dropped the Windows partition entirely, I do think the remaining chafing points are these:
* UI framework balkanization has always been, and remains a hideous mess. And now you don't just have different versions of GTK vs QT to keep track off, but also X vs Wayland, and their various compatibility layers.
* Support for non-standard DPI monitors sucks, mostly because of the previous point. Wayland has fractional scaling as a sort-of workaround if you can tolerate the entire screen being blurry. Every other major OS can deal with this.
* Anything to do with configuring webcams feels like you're suddenly in thrown back 20 years into the past. It'll probably work fine out of the box, but if it doesn't. Hoo boy.
* UI framework balkanization has always been, and remains a hideous mess. And now you don't just have different versions of GTK vs QT to keep track off, but also X vs Wayland, and their various compatibility layers.
* Support for non-standard DPI monitors sucks, mostly because of the previous point. Wayland has fractional scaling as a sort-of workaround if you can tolerate the entire screen being blurry. Every other major OS can deal with this.
* Anything to do with configuring webcams feels like you're suddenly in thrown back 20 years into the past. It'll probably work fine out of the box, but if it doesn't. Hoo boy.
* Audio filtering is a pain to set up.