Luck is a great factor. He might have dodged a bullet, she might have made the wrong choice. Frankly I don't give a damn about them. I've turned down worthy people, I've been turned down by less-worthy ones, and reverse. It doesn't matter. I don't have any regrets.
Programmers, like all people, can be good looking, physically fit, not socially awkward(?:, successful, financially stable/rich, confident, healthy, faithful, non-promiscuous, happy, etc., etc.)? and good in bed. The exact opposite can also happen. Most times it's a variable combination and that's just the way it is. That is how nature works.
Tastes and opinions (not only prejudices) can change and people can find themselves compromising as they grow older. This is what matters to me, I don't want to see myself regretting choices related to my love life.
Poor her. She should move to a city with less intelligent and successful men, I suppose.