"it's like what some writer thought things were and not how they actually were"

Doesn't that refer to a lot of pop culture? I can remember the 1980s and my memories of that period rarely bear much resemblance to the TV/films I see nowadays set in that period. I don't think it's just my personal experience. It goes deeper than that because many of the writers can't remember it well, or at all. That said I think the author of "Ready Player One" could remember the 1980s, just not my 1980s.