You can own certain Steam games as much as you can own them on GOG, which is to say it’s completely up to the publisher/devs. https://www.pcgamingwiki.com/wiki/The_big_list_of_DRM-free_games_on_Steam
Phew, I have a 2 word username. I’m safe!
It was for me at least, only moved to Linux after spending a long time with the steam deck
Oh no, that’s terrible. I hope you managed to survive your Lemmy comment section unscathed :((