Naturally you can't multiplayer alone. But if there are 2 people with computers there it would still work, which is the point.
Which would be like a majority of games seeing as LAN/DC are not popular anymore, developers don't feel it's worth the time when very few would ever use it. Can't say I blame them or GOG. Hate it, disagree... doesn't matter it's what's true. The mentality of multiplayer, especially online focused multiplayer is to not be an everlasting feature.
I would agree with this, if it weren't for the fact that GOG is the one offering the multiplayer service here. If they aren't going to implement the option for DC/LAN in their service why would a dev bother designing a completely separate framework to accommodate that if they're already using Galaxy matchmaking?
It's quite interesting in a way. I wonder how well it would have gone over if Ashes released here but it required to have Steam running for online multiplayer. DRM-free other than that, but for multiplayer you require Steam.
How many people would really be arguing that isn't DRM had that been the case?
PS: I agree business wise it makes perfect sense. I agree it's GOG adapting to the gaming market, finally participating in the multiplayer games market is a big step etc. I just don't agree how they did it meshes with their supposed 'DRM-Free' stance. That stance meant GOG taking a stand against something that was otherwise the norm. Same as client based, account based multiplayer that verifies your license before allowing entry is currently the norm. If they are designing the multiplayer, then taking on that norm, rather than expanding it with LAN/DC is against the spirit of DRM-Free imo. Realistic perhaps, but supposedly GOG is also about ideals.