Not every open world game needs to be infinite, right? There was no base building mechanic... but why would it need one? There was one in Fallout 4, but it was pretty much entirely ignorable and only offered annoyance. A subset of people wanted to play the sims. There was no base building in GTA games either. Most open worlds don't have such a mechanic.
What I found it has is replay value. You can play that game multiple ways and it is markedly different. Same thing with Witcher 3, there's no infinite game mechanic. You start over and try different things. People loved that game and frankly CP2077 followed exactly the same framework, just "with guns". Why is it a problem with CP2077? Couldn't possibly be because there's a prominent trans character, or a pretty girl who won't sleep with your male character ...
I think the near clone that Cp2077 is of Witcher 3 really drives home the point. People didn't have a problem with the game, but certain groups have made it cool to nitpick one and not the other.