Quoting the hashtag #yourenotthatpretty opens one's eyes to the thinking of some men. It suggest that women who complain about being a victims of sexual harassment can be dismissed as not attractive enough to have s legitimate complaint. 
I don't think those who think that way can be convinced of their error, but that hashtag shows how deep the problem is. 
That is not some cute "mansplaining". That is just blaming the victim to justify immoral behavior.