My experience, both hiring and being hired, is the opposite. I have found that lists of required technologies are actually mild suggestions. We're probably both right, which implies that we're moving in interestingly different bubbles.
> Introverts may as well find another line of work, especially since you will in most cases be working cheek-by-jowl with your co-workers at long noisy tables
Again, our experience is completely different. I have always had my own desk.