EasyGamer: Here's how GoG should have dealt with this matter:
1) Add Detention to the store (Red Candle Games' first work - the developer of Devotion). This would introduce the dev to GoG costumers without alienating anyone - Detention is still on Steam and Netflix even has a show based on it;
2) Allow a few weeks to pass;
3) Then, without any warning or fanfare, add Devotion to the store, as GoG usually does with the new games it adds every week;
4) Keep Devotion on the store regardless of presumable external influence.
Just my two cents...
The problem was that Tencents are more than two cents. :D