One odd thing I observed when I was in the USA last year is that the smarter a person is, the more they speak and share their thoughts openly. In India, you’ll find smart people generally speak very less. They also don’t write much. In the USA, almost every smart person also writes and shares it openly. Even one of friends in USA also mentioned that you are unstoppable if you are smart, have good communication and speak more.
I don’t think this is about being introvert or extrovert. This is more about our society and culture. In our society, speaking too much is considered bad. People gossip or criticize if someone talks too much, and you take it as a signal and follow it.
The bad part about this is that smart/successful people are sharing less and it’s stopping knowledge sharing in India. I really wish that all the smart/successful people in India do speak more, write more, and share more.
Btw exceptions are on both sides.