Responses to your questions: 1. no - anyone can fork anything that's FOSS at any time, license permitting, to do with as they please. Anyone telling them they can't is a draconian overlord who disregards the opensource ethos (and quite possibly violates licensing). Oh wait, we're talking about Red Hat here. Of course. 2. no, except that it's yet another "poke in the eye" towards Wayland fans who continue to tell everyone how much better than X11 it is. Perhaps it is for them - it's not for me, and plenty others, from what I've read, but people tend to get emotionally attached to their creations. The fact that someone wants to fork and support it means that they have to recognize that Wayland isn't going to sweep X11 under the carpet, that it _doesn't_, in fact, provide an all-round better solution, that all things suck in their own special way, with Wayland having issues for certain users and workloads, and X11 being rock-solid, but architected in a way that means that applications don't have to run and be rendered on the same machine (yes, you can run a graphical app over ssh if there's X11 involved at both ends - it will display locally, run remotely.
So to me, the backlash is just people who are sore that their precious Wayland will have more competition, and that it's likely to be adopted over Wayland if it maintains proper compatibility as well as receiving improvements. It's not a good look for anyone involved.