Lots of moments of people looking into the camera and going "how could communism do this?" which is cringe, but otherwise it's a fantastic story of human drama and how bad shit can get. Funny, I read this morning that Gorby is now dead, weird timing.
I quite liked Shcherbina and his little arc over the course of the show that was pretty emblematic of those themes, I really liked how he used the little tidbits on radioactivity he learned from Legasov on the way there to catch the two rat facility directors in their lies, and generally turns out to be a more standup guy than his initial introduction serves to show.