Are men truly insulted when a women is picked for higher positions or office over them?

Am I surprised that the president would view the selection of a woman as an insult to men? No. I'm not.

Are they qualified? That's what I always look at. Whatever happened to picking someone who is qualified for the job rather than the color or gender of the person. Just my thoughts though.

Folks get resentful if they feel a person is selected who didn't merit the elevated role they were selected for and were instead chosen for reasons apart from merit (this is especially true on a personal level). Mix in one's political persuasion and a willingness to conflate others' opinions about who a candidate is as opposed to what they are, and the picture about what Group A "feels" about Candidate B gets muddled quickly.

On a macro-level I'm not sold on the idea that a plurality of men are "insulted" solely by a woman chosen as a running mate. Were men insulted by John McCain's running mate being a woman only because she was a woman? And what of Water Mondale's? Conversely, had Biden not selected a woman, would a plurality of any particular group been slighted then?