I agree they should have done a better job and fine tooth combed everything but it's only after the backlash where people went on internet archives to see what it was before they announced it. That's more likely them searching and finding little details in edited obscure FAQ pages to justify and stick it to the man with that info thannit having influenced their purchase. Maybe somebody actually read an FAQ and came to an incorrect conclusion but the game store page where everyone puts that warning and the games boot up screen told them it did. Their downfall was adding a skip to reduce the server problems.
Here is an example of somebody who read it before release and even created
a thread here about the requirement, before release, and then subsequently
requested a refund. Was complaining all the way through while knowing it was always a requirement anyway. it's kind of clear it's not because some didn't know steamn always puts account requirements there, though I'm sure there may be some who look at Sony FAQ pages for that instead of the very store they have experience with in yellow warning colours. Seems more like a lot of it is outrage culture anarchy stuff for the sake of it that will of course dissappear for another release that is not PSN account related I'm sure.