Wayland itself is actually pretty solid right now as long as you're not using nvidia card. In the past, applications that need to interact with other applications (e.g. remote desktop, screen recording, keystroke injection, etc) can't be ported to wayland due the lack of api. Those api now already exist in wayland, but completely different which requires huge effort by application developers to rewrite their app. So right now we're just mostly waiting until those apps finally run on wayland, and nvidia finally stop being buggy on wayland.

Most app developers are dragging their feet when it comes to supporting wayland, but with big distros now shipping wayland by default, the pressure to make sure their apps work in wayland is really high in the past two years. For example, just last week vscode finally fix rendering issues that plagued wayland + nvidia users for years (had to use insiders version with some extra args but at least I can use vscode in wayland now). I think the rate of developers finally adding wayland support in their apps is finally accelerating.