@reasoning logic,
The narrator does rather exploit the fact that there is nobody present to say--"hang on a minute dude--what you just said is---well ---lost---because he's saying something else already. It's a shut out.
It misses the point too. We have to actually do something and he doesn't say what it is.
Is he in favour of sexual promiscuity or not and if not, as you can bet on, what mechanisms is he offering to inhibit it? He rather avoids the matter, has it on Ignore in other words, and it is what matters about this subject. There's nothing in evolution to inhibit promiscuity. In fact evolution functions on it.
So he leaves us all confused. He's right in everything he says but none of it is any use to us. He is never going to be drawn on secular inhibitions to promiscuity.