wayland is not yet drop in replacement for X11 with respect to applications/browsers using video hardware decoding accelerator
I managed to set up google-chrome on X11/Xorg for hardware decoding accelerator for 4k@60fps youtube video https://www.youtube.com/watch?v=K1QICrgxTjA&t=2939s on HP spectre X360 (13 inch) with system kubuntu 21.04 (hirsute). The same laptop and browser and OS does not work with wayland. It is a significant shortcoming of the wayland not being a drop in replacement for X11 in this respect. This prevents speedy wayland adoption. Compatibility layer for X11 to make this feature transparent for any application is needed.