This is very "distant" suggestion if you enjoyed Antimemetics, but The Unconsoled by Kazuo Ishiguro is another one of my favourites, and it too explores this idea of unreliable and inconsistent memories, although from a completely different angle.
I consider Recursion by Blake Crouch to be similar, even though I liked Antimemetics much better. I haven't read Crouch's other books, but have heard that Dark Matter is better than Recursion, though it may be less similar to Antimemetics.
I've enjoyed Peter Watts in kind of similar way I enjoy qntm. It's nerdy, explores interesting ideas, and written by a professional in a field who draws on their education, skills and interests. Premier work is probably Blindsight but the Sunflower cycle stories are likely easier to start. Like qntm, a lot of his works are online for free:
I read the original antimemetic division book a few times, and gifted the book to few friends too (love his other works too:).
I pre ordered the update, but only got a third through. I'm not quite nerdy enough to do a page or sentence comparison, but it felt less "tight" - not sure if the exposition is more prosaic or there's less mystery or just more description that wasn't strictly needed (for me). Or, maybe I just reread the original too recently! Anybody else read both versions? :-).
2025 paid version has more coherent ending (which is nice) and more linear timeline for your average non-technical Joe. Which is probably a good thing.
I read it in print and thought it was awful, such an interesting idea but explored by a rank amateur, curious to know how different the original creepypasta was.