To be fair there are a lot of games on Steam that don't have DRM, which means you can just drag them out of the steamapps folder to a computer that doesn't have Steam and they work fine. The decision to add DRM comes from the developer/publisher, not Valve.
GOG is hardly a toy and is the platform I look to purchase tons of games on instead of Steam (which I really like) and definitely over Epic (which I've never even installed)
Only drm free steam games. The ones with the steam drm require steam client to be running to launch (steam itself can be in offline mode but it still needs to be running)
Games using things like steam input might also require steam to be running so there is some drm free games that might not run also. Some of those will if you move them outside the steam folder / rename Steam.exe. If you leave them in the steam folder the game will start steam for you if when you launch it.
I think that's the point. The GP post basically said, "Gamers can't be messed with." A child post gave a ton of examples of how gamers are messed with, and this comment helps cement that. It does beg the question as to why Steam isn't as evil as it could be but does choose to be as evil as they are. To me (a very casual gamer) they do seem like the least evil.
Also don't knock those zip files purchased off of itch.io. Sometimes it's good to visit a cottage industry to see what's passing under the radar of the big guys.
I think that's more a situation where publishers demand some form of DRM so steam is trying to provide a default solution that most publishers are happy with.
That's the same Valve that doesn't let me play the games I paid it for unless they are running on its platform? That's how it "respects" me?