I doubt this will have much of an effect. Compositors already implement protocols that aren’t in upstream yet.

All this really is is putting some of those protocols in a GitHub repo and giving them a nice name. Gamescope will naturally implement them because frog works on gamescope. KDE might implement a few. Gnome and wlroots probably won’t implement them because (1) Gnome prefers a more lean set of protocols and likely won’t adopt a protocol until it’s “finished” and (2) Simon Ser, the wlroots main maintainer, is very involved with upstream protocols and would rather see development happen there.