Painless? Even accepting that emotional pain doesn’t count (which I don’t agree with) 50% of every person involved in operating a piece of dangerous machinery just suddenly disappearing absolutely caused widespread injury and death among those left behind.
Windows on a handheld is just bad. It’s that simple. A Steam Deck competitor needs a handheld friendly controller focused interface that is at least as good as Valve’s. Our just straight up ship with Steam OS and use Valve’s.
SteamOS still has many instances of awkward UX and some frankly broken behavior, especially while trying to use community features, it’s just that every other offering has been worse.