It stems from the idea that women are weak and need protecting. Some feminists call this idea "benevolent sexism", and oppose it on the basis that it supports

It stems from the idea that women are weak and need protecting. Some feminists call this idea "benevolent sexism", and oppose it on the basis that it supports the patriarchy™ Other feminists call this idea "affirmative action" and support it on the basis that it opposes the patriarchy™