No, it means it has succeeded in attracting the X developers over, so the old stack starts bitrotting.

Remember, this was not some guys just randomly showing up and pushing their shiny new thing on people. Wayland was started by one of the developers who had already worked on the Xorg stack for several years.

Nobody is intentionally going to make X worse but everyone will make the kernel, graphics drivers, desktop environments, and other components better but potentially different in ways that no one will be updating X to match. X and it’s associated tech like DRI will bitrot. And of course existing bugs will go unaddressed.