My email to GOG just now:

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Ever since GOG pulled Devotion and lied about the reasons (blaming "gamers" even though the thousands of comments about this on social media, from gamers, for weeks, are all asking for the game - obviously GOG was lying about the reason), many of us long term customers and supporters have been angry at GOG for the decision, the lying, and (on top of that) the continuing silence.
GOG has not replied to any of the thousands of social media comments and posts about this.
That actually goes against your own policy on your website:
Direct contact with GOG Team
"Have a question, need help or you just want to talk about great PC games? Reach out on GOG forums, tweet at us or drop us a message on Facebook, and we'll get back to you."
GOG has not got back to any of the thousands of commenters, so that's a further lie to your customers.
As with many others, I have changed my policy.
- I refunded any orders from the last 30 days (first ever refund)
- Deleted my GOG wishlist
- Didn't buy anything in the sale
- Made sure I spoke about this on social media.
I won't be buying from GOG again until you sort this out (nor will I buy CD Project games like Cyberpunk from another store).
As others have said, I have enough games to last me a lifetime already here, on Steam, and on Itch (probably hundreds that I haven't played yet). For the first time in two years I bought games in Steam's Winter Sale (and none in GOG's). Steam is shit and I know it, so I have low expectations and am not disappointed. Gog seriously disappointed me.
Unless this gets resolved I'll go back to how I was a few years ago and get all my games on Steam (if heavily discounted, to make up for the DRM) and Itch (full price if indie and DRM-free).
(Oh, and to top it off, GOG threatened me with closing my Forum account because I posted about the Devotion issue and they vaguely said it broke their forum guidelines.)
It's weird how a company can have a super-loyal customer, and via a number of bad decisions that they double down on, make that customer so angry that they lose all their goodwill and will no longer recommend them or support them.
I've no idea how to get all this alienation noticed by the people at GOG who have the power to change anything. If those in charge of GOG were doing their job properly they would be aware of all this already, and would have resolved the situation (and if they were competent they'd have avoided it in the first place). But, just in case the decisions are made by people who don't pay attention to the public mood, this really needs forwarding to them. The board and senior directors should be passed all the comments, emails, posts, blog posts, forum posts, Tweets, Facebook comments etc on this issue so they can see how much they have upset people.
It's still not too late to fix it.
All they have to do is release Devotion (as agreed);
give an honest explanation (not the disingenuous tweet) as to how it happened and who was responsible for the policy and ensuing silence (since it is obvious GOG staff have been told not to comment, by someone higher up who just wants the issue to go away) and apologise for lying about "gamers" when the obvious real reason is adoption of Chinese censorship; and make sure you have policies in place against lying to your customers.
Please pass that on to the senior GOG staff. At present I can't tell if they are oblivious to the situation (which would suggest a huge level of ineptitude and unsuitability for the role), or if they enjoy lying to and insulting the intelligence of their long-term customers (which is reprehensible).