There are several remarks in that article that bothered me. I agree with their message overall and am a strong proponent of Wayland but...

Unless your workflow (and hardware) comes from 20+ years ago, you have almost no reason to stick with Xorg

There definitely are valid use cases that aren't 20 years old that will keep you on X11 for a little while longer. And hardware too: NVIDIA dropped driver support for Kepler GPUs and older before they added GBM support which is effectively a requirement for Wayland, so you can't use these older cards on Wayland with the proprietary drivers

Of course, NVIDIA likes to do their own thing, as always. Just use Nouveau if you want to do anything with Xwayland, and you don’t have several GPUs.

Uh, no. Nouveau is not a serious option for anyone who likes using their GPU for useful things. And on those older cards it will likely never work well.

The author of that article seems extremely ignorant of other people's needs.