For people like us, X works just fine, with our nvidia cards, and we're not actually interested in the philosophical purity of who's fault it is that wayland doesn't work with our nvidia cards. If we cared about that kind of stuff so deeply, we wouldn't be using the proprietary drivers.
IF you want people to switch to wayland, then solving all those edge cases, and making it work properly with proprietary graphics drivers (or maybe getting nvidia et al to open their code, good luck with that) is your problem.