Reinstalling from images is resource intensive and take time and bandwidth than a simple "reboot into the old verision", while with NixOS all they need is provi

Reinstalling from images is resource intensive and take time and bandwidth than a simple "reboot into the old verision", while with NixOS all they need is provide their own channel. On Arch they could provide their own repos as well, of course, but a thing is keeping some derivations in sync, testing them etc, another is keeping a classic distro "de-facto semi-fork", it's again an order of magnitude more complex, resource intensive and time consuming. It's much simpler and faster a declarative ecosystem and developing with it then the classic model, astonishingly faster and simpler. I know many have never tried so do not know, but the IT at Valve I expect should be a bit beyond "the many who have never tried", so well, just curious why.