5 years is still infinitely more than 0 which would soon become the natural life span of dairy cows if veganism won a complete victory and everyone suddenly lost all interest in beef, milk and leather.

In terms of interesting things that are not mentioned, I'd really much rather hear what this style of farming consumes more of as this sheds light on whether it has any applicability beyond supplying luxury goods. We are told 90% less antibiotics, half the energy and so on and so forth; well all these cost money so presumably if they use much less energy and antibiotics per same yield and have not rolled up the industry there must be valuable things they consume more of. What are they, and is there realistic hope they can be rendered less harmful than consuming 10x the antibiotics and 2x the energy etc?