> You're saying that vegan people have to use milk alternatives like almond milk. Which is certainly not the case.
For vegans it certainly is the case. Vegans don't eat food that comes from animals. Milk is one such product. So vegans will definitely use milk alternatives.
Or... that almond milk is generally not great (IMO), and there are alternatives like oat milk which are really amazing. Oat milk also doesn't go rancid like cow milk... I've never had oat milk "go bad" before using it up, even after 10+ day vacations, so the waste can only be much less than cow milk, I imagine.
Also if you spill some somewhere your house doesn't smell like rotting bodily fluids (ok, probably getting a little extreme here but who likes the smell of rotting milk?)
Only downsides to plant milks, is they are harder to steam for lattes, they don't make cheese like we expect from animal milk (tho this has changed a lot and we're just about there now with some amazing brands), and they do have a unique flavor profile that is sometimes desired (for stuff like homemade egg nog for example).
For vegans it certainly is the case. Vegans don't eat food that comes from animals. Milk is one such product. So vegans will definitely use milk alternatives.