Nope, you are wrong, GOG is running two versions and only one of them got the update.
To you're saying the sentence "the patch is only available for steam players yet" by luckyspucky, which means this patch is not available here, not even on Galaxy, is correct?
Forget it :)
But as I said, the patch is not essential or anything ASAP.
People are just complaining at a high level here.
Bullet and Lucy are dead, well... people die.
The followers not being good. Man, have you ever played Skyrim? There you also only have one follower, he/she gets stuck nearly everywhere, especially in combat or they just disappear.
The only two games where followers seem to just follow natural and do something in every combat situation is Mass Effect Andromeda and this game. They were not buggy, carefree, just following and assisting with a quest and some comments (in ME too much comment). You are not meant to control the follower and they are not meant to finish fights alone.
I only recently got Dasur and he can even kill some enemies on his own, this was quite impressive. There are even perks here for you to improve them.