I love SteamOS for gaming and I think going forward that may get more and more adoption, but a lot of day to day apps or dev tools I use either don't have Linux releases (and can't be run via wine/Proton). I would love to jump over on host rather than dabbling with it via vms/steamdeck but it's just not productive enough.
One especially painful thing is when certain libs I'm developing with need different versions of glibc or gtk to the ones installed by default on OS, and then I die inside.