I think it's more complicated than that.

I did volunteer work eons ago for tagfam.org and I test as a middle-of-the-road extrovert but spend a lot of time in geeky circles where most people are basically painfully shy and many people interpret my middle-of-the-road extroversion as "God, what a ridiculous attention monger!!!!!"

I've gotten enough negative feedback over it, I spend less time on forums than I used to. I'm not an introvert but even I eventually give up on bothering if it's mostly downside.