Timboli: If you don't buy the games you would have at GOG and don't buy them elsewhere, you are penalizing their providers. You could also easily be sabotaging the DRM-Free movement, especially if those providers don't get enough sales at GOG or are borderline like many are when it comes to DRM-Free. The offset of doing such, could well weaken GOG, and maybe precipitate what you fear, what all of us DRM-Free lovers fear.
Well, imo those developers should be encouraged to release their games with other stores as well then. Part of the point of DRM-free is that users should not be tied to one particular store or platform. Imo, more competition in DRM-free stores would be a good thing - it's somewhat ridiculous that GOG entertains such a 'monopoly' on DRM-free games. This why I want to use my purchases this year to help support Zoom Platform as an up-and-coming alternative.
As for sabotaging the DRM-free movement, I think you have it backwards. By allowing DRMed games onto their store,
GOG are the ones who are damaging DRM-free. Because, once developers know they can access GOG's user base with DRMed games, where is the incentive for them for release DRM-free at all? Games like Gwent and No Man's Sky set a very bad precedent that make it less likely that developers will release games DRM-free. I am not going to support that.
Timboli: I really think you should preserve boycotting for if and when GOG do finally go too far, where you will have many more, including myself joining you, and have some chance of making a difference. Right now it is like farting into the wind.
In my opinion, they have already gone too far with Gwent, No Man's Sky, the Epic deal. These are not accidental moves. There is a clear pattern of continual erosion of GOG's core values. Now is the time to act. If we give them any more inches, soon the mile will be gone.