If I understand correctly Nvidia isn’t doing anything to do with explicit sync, it just doesn’t support implicit sync which is currently what Wayland uses because we don’t have explicit sync yet. Explicit sync would work with existing Nvidia drivers.
NVidiachan is busy selling GPUS for AI, but she is also working on adding explicit sync
If I understand correctly Nvidia isn’t doing anything to do with explicit sync, it just doesn’t support implicit sync which is currently what Wayland uses because we don’t have explicit sync yet. Explicit sync would work with existing Nvidia drivers.