Eventually people will have to get new hardware. That’s the moment to avoid nVidia, that’s how simple this can be.
Also, the problem is nVidia giving shitty Wayland support, not Wayland providing no nVidia support. It’s nVidia who has to write the drivers since they themselves opted to keep their implementation details a secret. There’s nothing the Wayland people can do except plea, beg and shame. If nVidia then decide not to care, then I say fuck them.