Hello. I’m Ian, a shy introvert. And those two things are distinct. Through a lot of trial and error, I’ve worked out a way to network and build social capital that works for me even though connecting to people is not exactly natural to me, as I know it isn’t for many academics.
Being an introvert in a world that seems to favor the expressive and extroverted can seem daunting and unwelcoming. A lot of the usual advice is to just act against type*. In other words, be extroverted for as long as you can sustain it, especially at conferences or other events where connecting with people is the goal.
Part of favoring of extroverts is that they announce themselves and seem like the movers, shakers, and doers in the world. In the United States at least, taking (overt) action is favored over introspection or making the decision to do nothing even though taking that decision may well be the right one depending on the situation.