The horse analogy in the video you linked doesn't consider the fact that while the population of horses is much lower today, the ones that exist today don't all

The horse analogy in the video you linked doesn't consider the fact that while the population of horses is much lower today, the ones that exist today don't all live as slaves. A portion of them live in the wild, some others are pets and some others actually are for "work". He seems to suggest that having billions of wage slaves is somehow better than having fewer happier people.