Indeed, the humans in the tv show are closer to the ones in the prequel movie, BATTLE FOR THE PLANET OF THE APES, than the mute savages in the original movie. I think it was generally accepted in APES fandom that the earlier talking human gradually devolved into Nova and her crew--at least in the original timeline.
*Original* timeline? I thought the POTA movies were a closed loop, like the first Terminator film.
What I don't know is where, if at all, the TV series could fit in such a loop.