The game wasn't ready, and the fact they pushed it out the door knowing that full well was slimy. As much as I despise early access, if they felt the need to do so, that's probably the route they should have taken. I'm someone who played the first STALKER day one, and seeing all the people saying "oh, I see you're new to STALKER. You didn't expect it to be broken? Ha! Let me tell you about the good old days!" is incredibly annoying, not only because they probably didn't play the first game day one and broken as fuck like I did, but also because defending a game that's been in development this long with "lol, it's stalker" is incredibly foolish. I wouldn't care if it was simply buggy, but having core features that aren't functional is unacceptable for a full priced game.
I have a preorder D1P SoC box on my shelf. I treated it like I treated this and many other games: I booted it to see how it runs, then when I felt it needed time, I shelved it until I felt it was where I wanted it. It's not great, but it is what it is. I don't do it with all games anymore like I used to (digital sales make that crazy talk), only when I want to support a dev or project.
The only time it grinds my gears is when it gets abandoned or just forever remains dog shit. My backlog probably exceeds my natural lifespan at this point, so whatever.