I don't think it killed at lot of people but it was pre-pasteurization so fresh milk didn't keep in a drinkable state for very long. Most of it got turned into butter or cheese pretty quickly. Almond milk was almonds (with a long shelf life) and boiled water (relatively clean) so less risk.
I'm sure people got sick buying hooky milk though.
Almond milk goes bad pretty quickly too. Not quite as quickly as fresh cow's milk, but you still don't want to keep that stuff around.
It does but you can make it on demand.
Yeah, the almonds themselves keep for a long time, so you store it in that form. Given the amount of labour involved you wouldn't be wanting to try to make six months' supply at once anyway.
This is pre-refrigeration, pre-pasteurization, and milk is an awesome growth medium for bacteria plus a direct vector to various cow born diseases. Even with refrigeration and a much better disease model, modern medicine, etc raw milk regularly kills people so historically you would expect a high lifetime risks even if people where drinking it within hours of milking it.