I think at the time it came out, it was probably very hard for people to visualize and fill in the gaps. But you're doing that in 2022, with a lot of sci-fi books, films and tv shows to draw on.

There's a lot that just isn't explained, or explained a lot later or just suggested, but it didn't bother me because I've seen Bladerunner, and the Matrix, etc. etc.

I really enjoyed it, but the plot is a bit meh. It's more about the world building, but then again...it helped reading it now. Not sure I would have enjoyed it as much when it first came out.