This site tells me I can add 51lbs to my bench stats in 3 weeks. Your decade old vegan argument is invalid.
The only decent reference is from the BMJ
over 100 years ago:
During the first 6 months of life, a baby's small intestine is highly permeable, allowing the maximum absorption of breastmilk and antibodies. During this 'leaky gut' period, the baby is most vulnerable to developing allergies.
Which says nothing about milk being bad.
Everything has an adverse affect on your health when abused, and there are plenty of things worse than milk your time would be better spent crusading against.