Define “bullshit”. Like, they’re all real. Milk has meant “white liquid” for about a thousand years in English so they’re all justifiably called milk.

Nut milks use a lot of water in places that often have shortages so that’s troubling.
Oat milk and rice milk are pretty good.

I’d avoid milkweed sap or dandelion milk.

Coconut milk is fine, if you’re into coconuts.

Milk of magnesia is pretty cruddy.

Milk of magnesia is so creamy tho and minty!