It is you who got confused. My comment is a top level comment on a post called "There is no Antimemetics Division (2018)" and in no way references any other works. I am not interested in talking about other books right here right now.
I was talking about the final book, not any early and partial drafts you saw elsewhere.
Either tastes vary and you just don't see it as I and many others do, or you didn't read the same thing, depending on what you read and when. What you read may have been a first draft of pieces of what became the book. The book clearly benefits from pretty good editing and it's pretty clear it evolved quite a bit to its final form. It's pretty clear it benefitted a lot from having early drafts of bits and pieces on the SCP wiki, as that gave the author a lot of free editing.
Or maybe the book itself is to some degree an antimeme ;-) like any very meta piece of writing, it lends itself to such jokes... one keeps meaning to reread it but never can remember when they're near their bookcase, etc...
Finally, maybe you can't relate due to not having had tough times that had to do with memory (several other posters have elaborated in this very thread on some examples), or other circumstances in your life that became fertile ground to ruminate on in the context of the book. Or maybe you like to read purely for the literal fun of the surface level plot and aren't interested in also thinking about the metaphorical implications of the ideas that are brought to mind by a piece of writing. Nothing wrong with any of that.
But fundamentally, you can read the same book at 20 and again at 40 and get totally different things out of it. That's OK.