Actually, while the title is a little off-the-mark, the article clarifies that they determine the desire for "gender equality" from surveys which ask about it directly. The surveys they use do not ask "Would you prefer a stay-at-home-wife?". Instead, they ask if the respondents agree that "It is much better for everyone involved if the man is the achiever outside the home and the woman takes care of the home and family.". Clearly the latter sentence is a value judgement that does not support gender equality (because if they had supported gender equality, they would disagree since having a stay-at-home dad and working mom should be equivalent to the situation described).