That's another issue entirely
I've only read Snow Crash and Anathem by Stephenson, but Anathem seemed to have a lot more exposition than Snow Crash. WAY too much, honestly. He might not have been so prone to it earlier in his writing. Hemmingway, King, and Bradbury did get or are getting away with stuff later in their careers that never would have flown when they were unknowns.
When I say that Foundation and 1984 feel dated, I don't mean it as a slight. They
are dated. Times change, and styles of writing change with them.