The original movie in the sixties had an astronaut (albeit a deceased one, which was a shame), an ape scientist, and a character that functioned as our eyes into the world of modern humanity. All we got in this one was one passive love interest apiece. That's the result of fifty years march towards gender equality in entertainment. Yikes.
How much gender equality was there in paleolithic times? That's about the level of technology that the apes possess in this film, with a hint to the future in learning how to read and write (by scratching on stone walls, no paper) and then appropriating human guns. They don't have even the most rudimentary medicine, as we saw in the complications from child-birth. So it stands to reason that they NEEDED strong gender roles just to survive. I mean, you're asking too much of apes that are really only one step removed from their wild natural counterparts.
If you're talking about the human side, yeah, it might have been nice to see a human female soldier, but I'm not going to the theater with a notepad to calculate gender-parity.