I think my issue with Mint is the small team maintaining the cinnamon fork that clearly can't keep up with the desktop.
Otherwise mint is functionally Ubuntu. I preferred Debian for my stable stuff. I like arch currently because PKGBUILD was acomparatively easy package format to learn and modify. Rolling is nice but I've used Debian extensively as well.
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.