GP is saying yeah, that's great and all, but other people try to push everyone to switch to Wayland because <reasons>. The Wayland ecosystem simply isn't there yet though; they're hawking a broken solution.
It's perfectly fine for a FOSS developer to walk away from any given project. When third parties come along and frame things as though the only option is to switch to a broken "solution" it derails the discussion. We (ie the community at large) should be having much broader discussions about both how to keep maintenance going as well as what's needed to actually make the replacement viable (so we can maybe switch to it later).