Ages ago Redhat people wanted to stop supporting X11 since it was old and harder to maintain with all the weird extensions and it being older C code. They wanted to move to Wayland and people claim that maybe in maintaining X11 Redhat also made some changes that made X11 worse. You can find all kinds of discussion of why Wayland is bad or why X11 is bad and Wayland is the one and only future. Now things are settled and Wayland won.