That crossed my mind too. But I see an ounce of truth in this. I can speak from experience, when you're young and consumed by technology, you might have difficulty conversing with women, even if you're attractive physically. My dating life improved after majoring in art ;-)
In general, I think it's hard to find people that can keep an interesting conversation going, and in your 20s you don't have much life experience anyway, especially if you moved straight from a classroom to a cubicle.
As far as talking about yourself on a date, it's not necessarily a problem, it's just a different style of communicating. If she's talking about herself, that's a strong signal she's interested. Then I can respond with information about myself--that's perfectly acceptable and possibly the desired response. In a conversation, you can change the subject, what a concept ;-)
Just some quotes from people unhappy with their sex lives used to incite the implication that tech workers are somehow destroying a city.