My understanding of it is that technical entitlement is a characteristic of someone who uses their early and rapid advancements with electronics or computers to be a know it all jerk. The main problem stated here is that they drive people away from the field before they get to honestly evaluate whether or not computer science is a viable career choice for them.

Frankly this isn't new or unique to technology, these people crop up everywhere humans do. Think unapproachable meat head at the gym. What's unique to technology is that it's "ok" or perceived as socially acceptable for technologists to behave this way. It's not.

She closes with (paraphrasing and generalizing) since mainstream society at large thinks its acceptable (if only to be avoided by non-technically inclined people) we need to change the attitude ourselves. From this the technology field will advance with the huge increase in potential talent pool.