Chazal, plural, didn’t say not to teach gemora to ladies, I believe one in gemora did: r Eliezer… and then Beruria learned from 100 teachers, so at least 100 were OK with it.
I once suggested to a rav to have a shiur on eyn Yaakov for women. He refused, “I can’t teach gemora to women “. When I mentioned that I share content of his gemora classes with female members of my household, he had no problem with that. So, reluctance seems to be due to public image and maybe not for everyone.