Dalswyn: This boycott (like most, be them online or not) is indeed unlikely to change anything, but it's still ethically relevant.
The thing is that I think it's misdirected, yes it's very concerning the power that China possess even outside of their frontier, and seeing multiple companies among the biggest and most powerful bend the knee before them (and I am not even talking about Gog here) because they are afraid they might lose business opportunities is also very concerning.
But to go back to the Devotion issue, the PC gaming market in China is ridiculously big, some peoples even say it's the biggest worldwide in term of revenue, so it's pretty obvious that all major online game store want a part of it, that's true for Steam, that's true for Epic and that's of course also true for Gog. (and apparently CDPR is very popular over there)
Also, at least for now, China doesn't seem to enforce very diligently it's own restrictions that said that only licensed games should be available over and most online shops are easily available. As a result it is not in any of the online store to attract any unwanted attention or start any controversy. Again it's not only Gog, I am pretty sure that's the main reason why Devotion never reappeared on Steam, or was sold on Epic or any other platform.
When Devotion was announced I was happy but I also was surprised, why ? because I honestly never thought Gog would touch this game for the reason I mentioned earlier, because yes, no matter how "nice" companies pretend to be they are still at the end of the day... companies; and for any companies risking killing a 600+ million customers potential market for a single game is not worth it. I expected Gog to just pretend that Devotion never existed like all the other shops are doing and nobody would have know any better.
So yes, from a ethical point of view, it's pretty disheartening what happen to Devotion and I would really love the game to be available for purchase again, but I don't think that boycotting Gog for something that all the other stores are most likely also doing because they cannot afford to be in bad term with China, is misguided.
If anything I would say the biggest crime that Gog has done in this whole fiasco is not refusing to sell Devotion, but getting caught. Something the others were smart enough to avoid doing.