Fair
but this is more of the NoMachine not doing the upgrade than Wayland having issues. I guess the closes thing in Wayland is now https://manpages.ubuntu.com/manpages/jammy/man1/waypipe.1.html over ssh or simply go nuclear with full screen sharing / control with RustDesk.
Definitely. The only problem is when things start being breaking for X11, it will a forced less pleasant upgrade.
Just like everyone can use Win XP, but none of latest software like browsers support XP. So do it at own paste now or be forced to upgrade later.