I personally have been pretty good at dodging spoilers. I've seen plenty of them thrown around but I didn't actually see them, I stopped the video immediately or hide the post before I read what it was all about.
There was 1 achievement spoiler though I wasn't able to avoid.
But you can bet there will be people in this headstart who will speedrun the game to get to the end of the story and it will be talked about everywhere, maybe not before the game launches, but certainly shortly after. It's going to be a pain to avoid it.
It all could have been avoided had they given the console discs the same limitation, that's what I'm disappointed in them about. Not that stores broke the street date, that's not on CDPR, not that they haven't unlocked it for the rest of us, after all there are people who aren't getting their copy until release regardless, and it wouldn't be fair to them. But that they weren't consistent in their anti-leak protection. They only protected PC, but not console.