No one has any idea what the types mean other than introvert/extrovert, and it's increasingly clear that even that split is highly dependent on a bunch of conte

No one has any idea what the types mean other than introvert/extrovert, and it's increasingly clear that even that split is highly dependent on a bunch of contextual stuff— someone who is gregarious and outgoing in one setting may be overwhelmed and need space to themselves in another. And moreover, none of it hard-coded; being "extroverted" is largely a matter of feeling comfortable wielding a set of social skills that are very much learnable— how to read the room, tell a funny story, ask questions that are curious without being invasive, volunteer information about yourself that invites engagement without oversharing, etc. This stuff is no different that learning public speaking, or partner dance, or how to play ultimate frisbee. You can watch it done well, you can give yourself opportunities to practice, you can even take classes or get 1:1 coaching. And it's also fine to choose not to do those things if your passions are elsewhere, but it's important that growth-mindset people understand that "introvert" is something you choose, not a genetic inevitability.