I mean, he's not entirely off. If humans have instincts, they're very mild. We have some ingrained responses and reactions, but that's different from an instinct. We have drives and tendencies, though that too is differentiated. The development of language is the key; it is what allowed us to elucidate abstract thoughts and create a culture, and develop technology. And it is technology that has allowed us to largely separate ourselves from the natural world and natural selection. Our last major adaptations were around two hundred thousand years ago; that's where anatomical modernity sets in, and we've been essentially the same ever since. The major changes have been in psychology and language-- cultural and social dimensions. Mind, I don't agree really with his hypothesis vis-a-vis religion. Parts of it seem right, but parts of it don't. Modern anthropological theories shed much more light on the changes that allowed the formation of religion and spirituality. And a lot of them are rather more material than you'd expect, such as food availability and settlement geography.