No, it's not surprising at all.
The Grim Dawn devs spent the first several years after release not bothering to give Grim Dawn any Crossplay between GOG and Steam, which therefore made the game virtually unplayable on GOG in multiplayer, since Galaxy-only multiplayer was a mostly-uninhabited Ghost Town.
And that gimped the GOG version of the game not only by making playing coop almost impossible, but also by making trading items with other players also almost impossible too, both of which are key features of that game, which the GOG version couldn't perform properly with no Crossplay.
Apparently after many years, they did finally bother to do the work to add Crossplay, but that was long after
everyone who wanted to enjoy the multiplayer aspects of the game had already been compelled to buy it on Steam so that they could do so.
Had they instead not been lazy, not slacked, and implemented Crossplay from day one
, as they should have, then chances are the GOG version might have sold a lot more copies than it actually did.
Honestly, all I see is blame deflection for why a game performed poorly on GOG. If the GOG community is reliant on Steam to make a game "playable" then there's something wrong here.
Your whole post just kind of reaffirms the developers position that a GOG version is probably not worth doing.
It took a lot of effort to support and intergrate Galaxy stuff into Grim Dawn. That's the developers own words, and if the sales are pitiful and reliant on the Steam community then you kind of need to ask why even do a GOG version in the first place, right?
Would suddenly having cross play with Steam make the game generate a lot more sales on GOG? We both know that wouldn't happen, and anyone thinking so is just kidding themselves.
The game did what it could on GOG. It had Galaxy features fully implemented, and full parity with other stores. It had multiplayer for people who didn't want to use Galaxy and so on, but let's blame them for the horrible sales because they didn't have crossplay with Steam.
Again, if GOG is so reliant on Steam for even minor success on title releases, then there's a big problem here.
Well, it doesn't matter and debating about it is pointless, because we already know what the developers position is right now. A GOG version is not something they want to do because of the poor sales games get on this store, and the effort it takes to implement and support Galaxy features.
The Galaxy SDK surely must have come a long way since 2014/2015 though? One would think that by now it shouldn't require any more effort to integrate than the other platform's SDK, and especially if it's not about rather complex things like netcode for multiplayer and such. Farthest Frontier is just a singleplayer experience after all.
Alternatively, as is the case with other games as well - it just could be released without Galaxy integration?
The few people complaining about missing achievements and other such nonsense do not represent the vast majority of GoG's user base anyway.
You'd think. I have no idea if it has or not. I'm just repeating the developers own words. I think the whole issue is the amount of work it is for the low number of sales they get on this platform. I think that's a feeling shared by many developers who've supported GOG in the past. The game "Hades" being just one popular example.
And yea, I totally agree with you. Just release it without Galaxy integration, which is something I'd be okay with and likely many others. You'd then have people like Ancient-Red-Dragon throwing a tantrum in release threads because the game doesn't have feature parity with other stores, and I'm sure others would feel the same way. I don't blame A-R-D or anyone else for feeling that way either, but it's a tough position for a developer to be in.
Edit - I see the downvote abuse is back. I haven't been on the forum in a few days, but I thought that was solved. Bravo GOG, one of the few times I've been able to give you some kudos as of late, and it seems that praise was misplaced because the low rating abuse is still here.
Edit 2 - Now I don't see the low ratings on my posts and A-R-D's anymore. This forum must be a mess...