I agree that factory farming is FAR from ideal and I wish the powers that be in the US would pave the way to better incentivize meat production that is more nutritious, better for the animal, and better for the environment.
Have you heard about White Oak Pastures? They claim to actually be putting carbon and nutrients BACK into the soil by their way of raising cattle. Hoping more will follow. https://www.whiteoakpastures.com/
Something to think about when it comes to emissions is how far your food travelled to reach your plate. Currently, the US imports produce from all over the world to have these types of goods available year round.
Endocrine disruptors are certainly concerning. There are ALOT of routes of exposure to these chemicals right now. BPA and BPA-like plastics are certainly a problem but two compounds called genistein and xanthohumol (found in soy and hops, respectively) are also potent estrogens. This paper below indicates BPA in milk is well under tolerable daily intake limits.
Actually animal protein is more nutritious and better absorbed than plant sources. This is especially true for organs like liver and kidney. Check out the USDA databases and you will see these products are excellent sources of B-vitamins and minerals.
I appreciate you writing this post because your points are very important and we need to be thinking about them for our health. However, each of these points can be easily addressed on an omnivorous diet, sometimes more so.