Yes, it features prominently in the MBTI, but my point is that "Whatever people think of Myers-Briggs [my experience is that extroversion is important]" doesn't make a lot of sense because introversion/extroversion is a widely-accepted concept that the MBTI uses, not a concept that comes from the MBTI.

I mean, Myers-Briggs is bollocks anyway so we shouldn't be using it for anything but funsies.

I have a dream that one day we will shit hard on that sort of stuff instead of validating it. See also "alpha male".