You stated that the
negative effect is higher for a woman than a man, thus claiming it to be a gender issue.
kross comment stated that the negative effect is the exact same for a woman or a man, thus disagreeing with your statement. It also states that the amount of women being "pleasers" are higher for cultural reasons.
You could claim that the culture that causes more women to be "pleasers" is an gender issue, in which you two might be in an agreement on that point if you two are also in an agreement on the definition of gender issues.