FWIW I usually use Moonlight and Sunshine for game streaming. It usually works best for me and works with other apps and non-Steam games as well.

I did use Remote Play for a few minutes a few days ago and then it seemed to work.

It does seem to get "stuck" for me fairly often, so i have to manually restart steam on the host. I just ssh in and run a script i made

pkill -9 steam

DISPLAY=:0 /usr/bin/steam -tenfoot

Also last time i tried to use wayland i was no longer able to use steamlink. Its been a while since i tried so hopefully that is fixed.