It wasn't anything like as scouring as Threads was. If anything it was more like a soap; they made rather light of nuclear winter and fallout.
I liked it, except the weak ending of the truncated second series.
There’s a sort of seriousness/grimness continuum from Threads and other films on one end to the cartoonish Sam Hell Comes to Frog Town on the other end.
I've read a book about that same theme that was mostly written online as some kind of collaborative effort if memory serves.
Edit: found it:
Imagine something like "The Walking Dead" series, but without the unscientific zombie horror and constant cheap gore.
The series is from 1982 and then there's also a film of the same name in 1986. There's some heavyweight comedy actors in both.
And lots of other funny lines.