Myres Briggs was not based on science, but Jungian pseudo-science. It's since morphed from an interesting theory (which happened to be mostly incorrect) to a pop-culture superstition.

There's a myth that people are "introverts" or "extroverts". It's a continuous unimodal attribute, not a bimodal one. There's people who are more "introverted", just as some people are really tall, but most people are just average. The "normal" person quite enjoys hanging out with friends, for a few hours a day.

I think there's another issue here - people always have double standards. It has little to do with introversion and extroversion. Try interrupting an extroverted person when they are busy, and they'll be just as pissed off.

It's probably true that highly introverted will tend to shy away from interrupting people (it's called forethought, which can be one of the things that makes them introverted). It's probably also true that extroverted people will be more direct when they want to shoo someone away. I think the main point is, people need to have the social intelligence to respect other people's personal space, and to defend their own space.

It's fashionable to think personality is a zero-sum game - introverts are smart, but lack social intelligence. That's not really true. Most people have pretty good social intelligence, but only use it when it suits them.