What the science fiction writers explores doesn't have to be possible futures, it can be impossible ones. And some science fiction, like Stranger Things, is set

What the science fiction writers explores doesn't have to be possible futures, it can be impossible ones. And some science fiction, like Stranger Things, is set in the past. In fact it's been a while since I read Snowcrash but it's set implausibly close to when it was written in 1992. This is presumably intentional.