The tools to build a decent remote desktop (less tricks to conserve bandwidth than X, but with sound support) are likely there now with Pipewire et al, but as far as I know noone has puzzled the pieces together for a comprehensive solution yet.

If you mean “network transparency” (even though X isn’t it either unless you restrict yourself to xmotif. It pretty much sends bitmaps very often), then no, wayland isn’t network transparent. But it can use the litany of streaming protocols allowing for much better responsiveness.