[teslabox]

The xeno-estrogen Ethinylestradiol is used in birth control pills because it is more resistant to degradation by the liver than bio-identical hormones.

Birth control use one of a variety of Progestins, instead of bio-identical Progesterone USP, for the same reason.

https://en.wikipedia.org/wiki/Ethinylestradiol

If you could share what specifically you found to be "uninformed and insane" in my comment, I would greatly appreciate it. Thanks.