I haven't seen the show yet, but the hard stop at technology does make sense. It's one part of Paul's vision, to break out of the stagnation that humanity has put themselves in. I can't say if the timing of that makes sense with canon sources, but from my understanding things were already slowed in progress and set in stone by the time of the Butlerian Jihad. Spice was a thing, it just wasn't centered for space travel until the loss of AI.

I think the loss of human progress is a very common theme in these long range scifi stories. Star Wars, Dune, Foundation (both before and after the fall), Warhammer, even the Bladerunner/Alien universe.