Tack said:
Unless you follow the Battle for the Planet of the Apes timeline, that is...
When I first saw the entire series broadcast late night on weekends one summer back in the '80's, Battle had the scene establishing where the bomb worshipers came from. IIRC, only a Japanese LD release had that scene intact before the DVD sets came along.
Even if humans don't become mute savages, and peacefully coexist with the apes, you still have those pesky mutants and their god.