This is true, and it is also true that the maintainers of Wayland have done a terrible job of developing the replacement. It is mostly good enough now to replace X11, but based on what I've seen reported about different features, they frequently let "perfect be the enemy of done" when it comes to implementing critical features. I mean, just look at the drama around remembering the position of a window, its absolutely ridiculous that after years they haven't picked a "good enough" direction and implemented it.