The thing is that Steam doesn't have a history of shutting down a significant fraction of games they have available by themselves. Hence people don't criticize them.
Also you can (not saying that you should, I personally don't trust Gabe) put some tust in a private owned company if you trust the owners.
In case of public companies they are forced by law and major shareholders into making shortsighted decisions and prioritizing profit only.
The reason for that fanclub is that publishing a game on Steam does NOT require you to use any DRM at all. That's a choice every publisher makes for themselves.
Furthermore, the Steam DRM itself is weak af (as in "circumvention has been automated") and as non-invasive as it gets (a simple licence check). All of this is in line with their public stance ("Piracy is a service problem").
I pirate more shit than i could ever play, but still buy games on Steam (But only the stuff i really want to keep playing like Baldurs Gate 3, or small indie titles that are just gems (i have to namedrop ΔV: Rings of Saturn and Star Valor here, because i come back to them ALL the time)
idk what was wrong with the games you named (except hl2 episode 3), yeah, the propriotary launcher is not so nice, but at least they support FOSS besides that, I love GabeN for making even games from other studios playable on Linux
Creating the loot box economy, profiting off cosmetics while hackers ruin the game, sequels that add small features, forcing a contained story to be episodic.
" love GabeN for making even games from other studios playable on Linux"
I don't want to say they are perfect, but they are better. while they offer cosmetics in cs, others would have made it pay to win. portal 1, hl 1, l4d1 wouldn't be playable anymore if it was for ubisoft, you get the point.
come to think, the only 2 things I'm mad at: propriotary launcher and they took down csgo with the community stuff