I can offer alternate descriptions of every one of those articles which is just as ingenious as yours. But it'd be conjecture. Not proof.
11 seconds sound clip from the Planet of the Apes (1968) movie soundboard.
You can hear this line at 01:37:56 in the Blu-ray version of the movie.
Quote context
[...]
- He had a failing heart. Towards the end he had this prefabricated valve put in it.
- He was a weak, fragile animal.
- But he was here before you, and he was better than you are.
- Would an ape make a human doll that talks?
- Lucius!
[...]