It's not. It's plant juice. It's plant juice I enjoy drinking, but you cannot use it to feed a newborn human baby unless you want to starve her or him. I breastfed, but if I hadn't been able to, i would have turned to cows' milk-based formula!
Well the reason for that is NO MILK including whole cow's milk is suitable for infants. Formula is specifically formulated for infants and yes, brand like Wy Soy are nutritionally sound for a growing infant and especially useful for allergy and intolerance.
Older children should not be having barista oat milk etc as the only milk made nutritionally for age 2-5 is Alpro Growing Up milk as specifically made with appropriate minerals and vitamins in mind.
Cow's milk is made to turn a baby cow into a Hiefer. Not ideal for humans.