I use Wayland exclusively, but unfortunately I don’t think I have an answer for you since I’m not entirely familiar with this idea. Is your concern just for the configuration of a universal set of hotkeys configured within the compositor rather than a desktop environment?
I wasn’t aware that x11 facilitated this. I’d have figured keyboard mappings are abstracted from the compositor and left to the DE to handle, aside from core binds that allow dropping back to tty
I wonder if this is at all related to the EU changes to eBook DRM standards, where the standard Kindle Adobe DRM isn’t compliant