What I mostly meant was that for people who prefer to use X11, that will probably remain viable for a long time, without any Wayland. There's this notion that X11 is "deprecated" and that "no one is maintaining it", but the reality of it is far more nuanced. The main "flag day" will probably be when toolkits start shifting away from X11 to Wayland only, and applications start using them (there's usually big lag between release and widespread adoption of new GTK versions and such).

Some qualified language in all of the above, because hard to predict the future etc. etc.