People were duped ala globull warming data omission style - about dietary fats. Animal based fats are the healthiest for us. The vegetable fats are not natural for us to eat in that form, and many must be chemically processed out of vegetables. Thats how’you get transfats, hydrogenated veg oils.
Naturally’occurring fats in/from animal’products are the best for people.
And as for soy, not good for men, it mimics female hormones, estrogen mimicker. Not a big issue for women.
Soy in females with a family history of breast cancer may increase the chances of BC appearing and the severity of the cancer. Still not a clear study I have seen. But empirical evidence seems to bear it out in the US.