The issue is that there is a negative stereotype about women being ditzy and not appreciating math or statistics and this ad reinforces that negative stereotype. It's similar to the sexist Barbie doll that would say "math is hard" when you pulled its string.
It would be better if it was a guy saying he wanted to talk about football because there's no negative stereotype about men being uninterested in math.
That said, the statistic provided in this case truly is uninteresting, so it would be no surprise that both men and women would want to change the subject to something more interesting, like shoes or football.
