That said, hormones in dairy products are a real issue. It's illegal to use hormones in Dairy Cows in Canada, and when antibiotics are necessary for treatment of sick cows, their milk is discarded until it tests clean. Diary products typically cost more in Canada than the U.S. as a result, but I don't mind paying for the extra safety.
https://bcdairy.ca/milk/articles/does-milk-contain-growth-ho...
NATURALLY CONTAINS HORMONES. This isn't about added hormones for growth. But the fact it contains natural hormones which grow baby cows as fast as possible. Basically, unless you're a calf, you shouldn't drink milk. I'm less sure about processed milk products (butter, hard cheeses, etc)
That said, if you think the science supports the case for limiting oestrogen intake in our diets, a practical step might be to lobby for limits to the use of those hormones in dairy production (like most other western countries) as a first step. Trying to somehow have people stop consuming dairy products seems like a much larger hurdle, limiting it's effectiveness in actually reducing consumption of those hormones.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4524299/
> In summary, it seems that steroid hormones are very potent compounds in dairy foods, which exerting profound biological effects in animals and humans. Most of the previous knowledge about the steroids is according on their physiologic and sometimes supra-physiologic concentrations of steroids but recently it is found that these compounds even at very low doses may have significant biological effects.