I think the Xorg vs Wayland situation is not too dissimilar to that of Windows vs Linux. Lots of people are waiting for all of their games/software work (just as well or better) on Linux before switching. I believe that in most cases, switching to Linux requires that a person goes out of their way to either find alternatives to the software they use or altogether change the way they use their computer. It's a hard sell for people who only use their computer to get their work done, and that's why it is almost exclusively developers, tech-curious, idealists, government workers, and grandparents who switch to Linux (thanks to a family member who falls into any subset of the former categories). It may require another generation (of people) for X11 to be fully deprecated, because even amongst Linux users there are those who are not interested in changing their established workflow.

I do think it's unreasonable to expect everything to work the same when a major component is being replaced. Some applications that are built with X11 in mind will never be ported/adapted to work on Wayland. It's likely that for some things, no alternatives are ever going to exist.

Good news is that we humans are complex adaptive systems! Technology is always changing - that's just the way of it. Sometimes that will lead to perceived loss of functionality, reduction in quality, or impeded workflow in the name of security, resource efficiency, moral/political reasons, or other considerations. Hopefully we can learn to accept such change, because that'll be a virtue in times to come.

(This isn't to say that it's acceptable for userspace to be suddenly broken because contributors thought of a more elegant way to write underlying software. Luckily, X11 isn't being deprecated anytime soon for just this reason.)

Ok I'm done rambling.