syscall: I was mainly defending standalone installers. Honestly, galaxy is convenient and that's why I'm using it, but I'm always also downloading the backup installers, if that feature's gone, I'm as well. And there's no reason why any subsequent installations of a drm-free game should work any different from first by simply double-clicking a "setup.exe" file (at least the possibility should be there).
I'd say the argument "only install via gog and then you can just move files" describes quite an edge case here. Yes, the games are technically DRM free but making the process artifically hard is at least a dark-pattern. I'd personally consider it a form of DRM if the installation via gog is made as easy as possible but the DRM-free way is made artificially difficult.
I mean this could mean that the game is just a single folder you need to zip and move to a different machine.
It could also mean that the installer/game is creating 10^6 (random) files (or more) and registry keys at random locations of your system that all need to be present for the game to work. This isn't technically a DRM but it makes it artifically hard to move your games to a different machine. So I'd considere a standalone installer a proper way of providing a DRM-free game.
Fun fact: about half of the DRM free games I have from Humble are just zips of a game folder. No installer provided, non needed.
Just copy it where you want, run and play.
Is that DRM free? Because that's what BKGaming is saying you get with Galaxy.
Sure, it's not exactly intuitive or easy, but the possible future BKGaming describes is never likely to happen. Even if GOG went Galaxy only I doubt they would remove the backup installer option from Galaxy.
What he's saying is that Galaxy isn't DRM and that using it doesn't make games have DRM.
Galaxy is just a tool, a way to access and play your games. You can use it if you want, of you can completely ignore it.
GOG wants people to use it because it is easier, that means people have less problems and raise less support tickets, that's cheaper for GOG. It probably uses less bandwidth as updates are smaller, not sure that matters to a business on GOGs scale but it might.
It allows developers more control over uploading and managing their games, which means we get patches quicker (when the Devs bother), that's better for us and GOG.
And for those who don't want to use it the only thing that has changed is the installers are a few inches lower down the page.