Tbf, as someone who's never read or heard of the book, it just seemed like an interesting quote about a hypothetical future for humanity. Definitely didn't occur to me it might be a spoiler.
I haven’t read any of them, but from what I’ve heard of the plot of the first, it seems reasonable to want a spoiler tag here
Ive read all 3 books, though a while ago. I have to think hard about what this could be referring to.
I remember, now, but it wouldn’t be a spoiler for me.
without context would it's pretty meaningless imho