So many Internet posters are today trying to get clicks in their feed that raising obvious nonsense controversies is a desperate attempt to draw attention. Was to say more, but I don't think feeding the trolls is any good.
It occurred to me there may be a way to test her ideas: get a large number of paintings, and see if she can tell which ones were done by women, and which by men. If she can, it might give some credence to her theory.