Good question. I have never heard this stereotype before about Traditional Catholics. I do like your views on the Traditional Latin Mass, you are most correct in this assessment. However, it doesn't mean in any way that you're not allowed to use your God given temperament and personality. An outgoing personality is a real gift, people, especially introverted people, really need extroverts like you to get them talking, lol. Introverts aren't hermits, they value friends and time with other people as well, they just don't actively pursue it as well as extraverts. And I say this from experience. Hope this helps.
I don't think we can automatically say that Traditionalists are introverted. People join the Trad movement for various reasons and at various times in their lives. Perhaps there is a minor corellation, But I doubt that it would be true to say All tradional Catholics are introverts. That is too much of a blanket statement to be true.