eh, because for the other platforms it's easy for them to just pop on little tweaks as they make them whereas to send it over to gog they have to package it as a version or whatever and it's not worth the effort/time to do that for how minor they view the things to be
Console certification processes can take quite some time compared to Steam or GOG's content distribution systems. Shouldn't be an excuse since plenty of other (indie) developers manage to keep their games up-to-date on GOG.
I agree, it's weaksauce
blinkin - I actually haven't played the game hardly at all apart from several hours in survival to get a feel for it / a little familiarity for when I start story mode - but since their announcement about the delays and changes to story mode, it's going to be a long time before I play it I think
I actually am hoping to be living without internet in the next handful of years, completely offgrid (survivalism!), and so it'd be nice to get the full story completed and patched before then! I know you can't rush such things, but, can't help but be a little wary of ever being able to play the completed game!