Why is a woman sitting alone in a restaurant automatically considered to be single? Plenty of married people or persons in serious relationships also go out to eat and sit alone. I did it all the time when I was married. Also, I am not sure how widespread is the ability to determine that a woman is 30+ at a glance, but I know I can’t do it. I mention those two items not to distract from the point of your post which I understand and sympathize with. However, when stereotyping an entire class of people “men 30–40 years her senior” for boorish behavior “a 30-something single woman sitting alone is target #1” it is better if you don’t resort to different stereotypes like all women sitting alone are single or all men are able to spot a 30+ woman at a glance, in your own arguments.