Microsoft also implemented the Wayland specification and it did zilch for adoption or growth of wayland. Let me put it another way, Chromebooks also adopted upstart and that has not had an impact on upstart use or adoption in the broader linux ecosystem.
Its more likely they're gonna use work done for desktop linux with minimal if any contribution backwards to things we care about.
The fact that this will not be remembered as part of Gate's legacy makes my blood boil.