Not only that, but mammal milk is literally hormone soup. Including estrogen. And soy doesn't actually contain the same type of estrogen. They contain isoflavones including plant estrogen (phytoestrogen). Similar but different chemical, with different bioavailability in mammals.

Also:

For example, many studies have found that Western-type dietary patterns characterized by high intakes of red meat, processed foods, sweets, dairy, and refined grains are consistently associated with higher estrogen levels ( 3 , 15 , 16 , 17 ).

https://www.healthline.com/nutrition/foods-to-lower-estrogen

Basically the diet of the carnivores that mock the soyboys. How's that for projection?