As someone who's mainly been a macOS user in the past couple decades but regularly uses Windows and Linux, I find that the number of papercuts, sharp edges, and lack of consistency in the desktop Linux experience is still too high for my taste. It's certainly much better than it used to be but still has a way to go. But then again, I have little need to tweak system internals.
Fair enough, but if I elaborated much it'd quickly turn into a blogpost.
In attempt to sum things up, I'd say that many of the woes of the modern Linux desktop stem from being stuck between different worlds — one example would be with the X11 vs. Wayland situation. Wayland has slowly been improving over time, but there are still concessions that are being made by using either. I understand that transitions are difficult and that particular case is being made more difficult by parties like Nvidia, but the end result is a degraded end-user experience that won't be fixed until the transition is over.
The easiest fix for this issue is to not use Wayland, like 99% of users. I'm not sure who gave you the idea that Wayland is production ready, but it's certainly not going to see prime-time Linux for another few years.
Ubuntu 21.04 will be using Wayland by default for non-Nvidia users, which would suggest that it's not far off.
There are also configurations that are better supported by Wayland than X11, not to mention Wayland handles things like trackpad gestures better (which at this point, X11 is never going to get better at), so even if it's not yet production ready there are reasons why some might want to use it.
