Cavalary: You just got games from GOG, so paid money to GOG and not their competitors. For this, GOG gives you nothing.
You got games from Steam and not GOG, so paid money to Steam and not GOG. For this, GOG gives you free copies of (some of) those games.
Message: GOG doesn't care about their loyal customers, but is just focused on drawing new ones.
As in pretty much what they've been doing since the "good news". If not, to some extent, since deciding to allow newer games and higher prices.
.... what do you want gOg to do? Ignore Steam users and not try to get them, or give you a bonus for each Steam users who comes. For apparently, you feel cheated somehow. Or do you prefer it if Steam users generally stayed on Steam and ignored gOg?
The message I see is "We want Steam users here!" not "We ignore our users!". For the existing users they do exactly the same as always, provide new sales, some contest, the usual Twitter participation crap, new events and so on. The inclusion of Connect do not mean the removal of something else, just that someone now also have another option to redeem a gOg game, and I feel it is petty that a subset of gOg users base do not see this is a good thing, but is rather.... jealous of it.
Bottom line is - for you who do not use Steam ,nothing at all is changed, it is exactly the same as before. So if you feel gOg "doesn't care about their loyal customers" now, then arguably this was the case before also.
(And gOg do not give "free copies", the user have paid for them, albeit not on gOg.)