Yes, he did mention the capitalism and industrialism of modern society, its relationship to our past, and it's effect on our future in "Food of the Gods." I listened to the lecture at his book signing downloaded from the link posted above (thank you so much for posting that, I didn't even know he existed).
I think (and thought, before hearing him say anything about it) that capitalism is a cancer of the human civilization. His theories are amazing, a truly brilliant man and forward thinker. Of course it would be fantastically difficult to prove his theory of the psilocybin mushroom's impact on evolution, but it is a very refreshing and frankly very believeable idea.
Anyways, thanks again for the link, I knew nothing about McKenna before this thread. And now I have hours and hours of great stuff to listen to.
Peace.