“Milk” from nuts and oats is just a word. Call it oat juice, oat extract, make up a new word and call it oat zligbab. The actual thing being drunk is not far from the realm of things we already drink and eat. Getting hung up on it being called “milk” is a superficial and disingenuous argument against it.

If you want to compare the extremes of industrialized processes, are you familiar with commercial dairy farming?