Goat milk plus folic acid would be better for an infant 12 months or older than bovine milk.

Bovine and goat milks are unsuitable for infants under 12 months, because they contain too much protein in undiluted form, and not enough nutrition content when diluted to safe protein levels.

The dawn of civilization up until the industrial age fed human babies exclusively on their mothers' milk, or upon the milk of a human wet nurse. Those that could not feed in this manner died. It was very tragic, and it made a lot of people very sad.

Consuming bovine milk is not a critical step in human evolution. It's just a culinary choice. People also ate locusts back then. It didn't catch on as well, because cheese tastes better, and doesn't have raspy, sticklike hindlegs that get stuck in your teeth if you don't snip them off with kitchen scissors. You can certainly feed your baby pureed grasshoppers, but most people don't, because they are squeamish about insectophagy themselves.

Sure, and just like with grain and other staples dairy is a massive, profitable industry with public and government lobbying organizations, like the one you linked. I'm not picking a fight with you and have no qualms with dairy consumption, I'm just saying your sources are potentially just as biased as the wheat based food pyramid. If you're trying to convince people milk is healhy there's better options. And as far as necessary for civilization, it's not like every human society in history emerged cultivating cattle.