Milk isn’t dairy. Because it’s a liability in many parts of the world without abundant fodder or cold climate. Milk can be dangerous without refrigeration in hours.

Dairy is much more than milk. You can consume cheese, yogurt, butter and many other products where the process of making the dairy product eliminates lactose. Think about things like cooking oil — an impossible thing to manufacture efficiently if you lack the resources to grow oil crops and process them. With diary, you just make butter, which is trivial to do.

Domesticated cows and dairy is a pretty miraculous thing. It’s a shame that the excesses and poor practices around industrialized agriculture and economic policy has made it a ethical problem for some people.