As much as i like the concept of Wayland, until it's a one click always works without any caveats option in Ubuntu it essentially doesn't exist. Ubuntu 20.04, the latest of the most popular distributions, does not have wayland enabled by default. They actively discourages you from trying it if you have Nvidia, which again is the most popular gfx card - not sure if one is supposed skip the proprietary drivers or not with Wayland but on X11 using Nouveau is not a pleasant experience.
Ubuntu was criticized for that; every time they release LTS without default Wayland session, they delay the solution for another 2 years.
One of the reason why Apple is able to move fast, that they do not fart around with introducing new and deprecating old things; if you are not ready for that, it is your problem, stick with old release. So most vendors get ready for the new things, because they know there's no way to avoid them. In Linux land, we have people putting hacks on top of other hacks just to avoid switching to the new thing, and in this case, the existing Ubuntu LTS releases are part of the problem.
Also, Nvidia is not the most popular GPU in general. It is a gamer card. Most used GPU is Intel. Intel has some 70% share; the rest is split between Nvidia and AMD.
If you insist on your favorite x11 window manager, the integration is on you. No point in complaining then, it is self-inflicted pain.