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.
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.