Understandably, the point was that for those 30 gallons of water you could be producing something that is essentially unmatched by the almond. One gallon of raw milk cannot be compared with one gallon of home made almond milk, and while there's a lot of things that have saturated fat, cholesterol, there isn't any plant that has that nutritional concentration plus a lot of things are found exclusively in mammalian milk and not plants.
Have you look at the studies done on raw milk?