Time4Tea: As a Linux user, I would switch back to Steam at the drop of a hat, if GOG ever removes the offline installers. Steam has
far better support for Linux than GOG: the steam client works in Linux (unlike Galaxy) and Proton is arguably the most advanced tool for playing newer Windows games on Linux.
Exactly the same in my case — it costs me additional effort and often a bit higher prices to prefer keep preferring GOG, but I consider it worth it because of DRM Free advantage, which simply makes me free and feel real owner.
I'd say even more — for users like me, who does not own Windows copy, dropping offline installers makes my games
practically unavailable for me. It's much worse than on Steam. It's like Epic, where I have a lot of fancy freebies, which are worthless for me, because their client simply refuse to work under Linux for me. Some of Epic games may work as DRM Free after download, but, guess what, I cannot download them.
If I ever have to make my GOG downloads using Galaxy, I'll find a way/Win PC to do this, but consider it my last download and I'm moving out from here.
Regarding that C2077's small bonuses for Galaxy users - it'd be fine for me (I think we could tolerate this kind of promoting Galaxy), but the whole context of recent decisions causes that everyone consider it suspicious/dangerous. And GOG simply deserves this kind of reactions as they do a lot to make us worried recently.