So now in 2001 they even had to bring in an element of miscegenation to the story line... The original movie was big back then... America was close to landing on the moon and most people had no idea where all this space travel stuff would lead... The notion of people returning from space travel to a vastly changed world peaked peoples imagination back then in a big way... Looking back at the movie some 40 years later I am amazed at just how well the original plot showed the decay of human society... The story line is almost frightening.
I liked one of the sequels where a human is told "An ape can say NO to a human, but a human can never say NO to an ape!" They were referencing another "N" word.
I think you're right that the 2001 movie was promoting miscegenation albeit in a sneaky way.
I think the first two movies are kind of funny though how the female scientist chimp Zira is such a feminist and yet she had no problems with the idea of Nova (a female human) being dissected and was annoyed when Taylor wanted to bring her along when he was rescued.