I just spent the time watching the vision segment of that video, and while the presenter uses the brain as a simile to motivate neural network architecture, it actually is not modeled at all on how primate visual cortex works. Seems some tweeps also got caught up in this hype. I think those few slides were really just to show the complexity of the problem.
For parties interested in actual models of biological vision, https://serre-lab.clps.brown.edu/wp-content/uploads/2014/10/... is a good resource.