You don't own the games. You can't trade them. If they get removed from the platform you are SOL. Also it affected physical games as well. Why did I have to install Steam (that was green steam btw) to play Empire Total War?
I'll stick to torrenting, besides a game is like 10% of my salary. Nope.
Are you sure about them being removed from the platform? I purchased GTA: San Andreas before the shitty remaster came out, and I can still download it. It is no longer available/purchasable, but I still "own" it. Do you have a better example, as I haven't really heard of this happening before?
But yeah, all the other points you mention are valid. GOG is better in this regard, but their platform is nowhere near the level of Steam in terms of user experience.
Valve has made it very clear that any game you purchase on their platform will always be available to you, and they've held up on that promise for 15+ years so far.
I completely disagree. You still own the games in Steam, and you can download them forever as long as you have your account. It's not like streaming services that can just remove stuff. I think you may not understand the difference.