The quest comes full circle. It's not about how well the ape CGI is done, or how the film provides an excellent explanation to why humans in the original 1968 Charlton Heston movie are mute. It's about how they performed this revolutionary task in the prequel trilogy, of starting out with a boring human-oriented narrative in the first movie ... to a deep, slow-paced but entirely engaging, character-driven, ape-oriented narrative - no matter how perfect Woody Harrelson portrays a Brando/Colonel Kurtz in his Ape-pocalypse Now. They've proved it possible: you can tell a great non-human tale, with humans as secondary elements.
PS: Hands down, the movie's best scene: Bad Ape.
PPS: And I'll probably buy Michael Giacchino's soundtrack.