I wills say this: I enjoyed Termination Shock, but I felt it was the second-weakest of his novels after REAMDE (Not including co-authored ones like D.O.D.O) I still thought it was a great read overall, both for the story, the dive into cultures I wasn't familiar with, and the climate change story. TS was too... normal? of a novel, without some of the points that makes Stephenson's other novels shine in a league of their own.
I've heard him say that REAMDE was his attempt to write an airport paperback. I don't think he succeeded there, but Termination Shock does work as a light thriller so maybe he was taking a second swing.