The reason feminists tend to hate this concept is because they think, "But what if she eventually gets better than him, at building some particular thing? Won't that throw off the balance and turn her into competition and a war of the sexes will erupt?"
No, it will turn her into a protege and men are proud of a flourishing protege.
When he looks at her excelling, he can say, "I built that."
He remains the Builder.