It's a concept that places randomly, emotionally acting people on the same level as people who try to think rationally before acting and prefer quietly educating themselves over socializing, as "they are just different personality types". It's a concept putting people that spend all their evenings in bars drinking on the same level as those they perceive as "introvert bookworms". They don't have to admit that the quiet wallflower who doesn't seem to be interested in participating in their primate dominance games is just more intelligent, careful and thoughtful than them. It's thus a quite useful idea for people who don't do a lot of non-social activities.
It even gives those "extroverts" an excuse to pathologize and patronize "introverts", just as they do during other social settings. Even the article has a list of "coping" strategies at the end, such as "Balance your time: For every 1-hour meeting, make sure to plan at least 30 minutes to yourself." – as if thinking before speaking makes you mentally ill and require special treatment.