I think this thread shows it’s very hardware/driver dependent?
I’m posting from Wayland running on Plasma 5, on 100% recent gen intel hardware, and as far as I’ve been able to tell I have zero deficiencies that matter in functionality. (aside from whatever little bugs surely exist that I’m not noticing - and big things no one really has yet like HDR)
I don’t have much sympathy for the haters who think we shouldn’t be moving to Wayland ever, but every recent thread seems to confirm that Nvidia and possibly other HW configs are still likely to be problematic.