Yes, imo GOG is responsible for upholding their stated value of DRM-free on their store.
Did they help to get the DRM removed? Is there any evidence of that? GOG hasn't made any statement and their communication on the issue over the past 3 months has been piss poor. They haven't removed the small print on the store page, warning that the game includes DRM. They haven't marked the wishlist request
as 'completed', nor ever even acknowledged it as 'in progress' in the first place. Right now, there is no evidence they are even aware of what is happening.
As far as I can see, it has all been driven by Hello Games.
Hello Games hasn't made a statement either, GOG didn't make a statement when they help to removed Wasteland 3 Pre Order DRM, when I contacted InExile they just give me a generic answer and send me to fly, they don't even reply when I wrote them back, but a member of GOG Support told me that they would communicate with the team at InExile and try to resolve it with the next patch and so they did, is very probable that they did the same in this case but I know they are extremely overwhelmed and trying to catch up to spend time to show of their work. I think they really care and that's what they prove me with their actions, if you can see all the bad things, try to see the good too, and give them some credits for the work, they are humans and are trying to do their best.
That's true. But, their involvement is clearer, since Hello Games is the developer - they have clearly done the work to remove the DRM and released a patch to fix it. What GOG Support told you about Wasteland 3 is probably more than they have said about No Man's Sky in the past 3 months. I agree that, regarding Wasteland it seems they did have a hand and I do give them credit for that.
But, given their lack of communication over the past 3 months, their involvement with No Man's Sky is much less clear. I know some GOG users have approached Hello Games independently, to ask for the DRM to be removed (there are comments about that on the wishlist request
. So, it is possible that Hello Games may have acted based on user feedback, without GOG's involvement.
You seem to be willing to give GOG the benefit of the doubt. But, I am not, given their other recent actions related to Devotion, pre-order bonuses in Cyberpunk (and CDPR's general dishonesty) and their lack of willingness to address other games on the store that have DRM. As far as I'm concerned, if they want credit for this, they need to speak up and claim it (if they even care).