Tbh, i did a 2 day workshop based on myers-brigg about 25 years ago. It's fun, but in the big picture i think it's bullshit. But that's one person's opinion.

Introvert and its likely this site leans more that way though I don't know if I'd say heavily so. Honestly I haven't seen enough yet for me to decide one way or the other.

I’m wondering if the commonality here might be the N - concepts over the concrete

I agree that the MBTI predicts very little, but a test that I do have confidence in is the Strong Interest Inventory. The Strong advised me to become a computer programmer, and that has been very good advice. Interestingly, I am the only ENTP on my department's staff;almost everyone else is ISTJ; we all took the MBTI on management request.

Well none of us are speaking to real people are we
I actually think I am an affected extrovert, as I have learned to get up and act confident. I still get wobbles in large lecture theatres but its better.

I'm 63 an been an introvert for 62 years. The last year has been transformative for me. I put myself out there. Very uncomfortable.at first and often still am. I initiate conversations now and join in the conversation. It still feels somewhat awkward but it is getting easier. I also started performing on stage at open mics. I have totally stepped out of my comfort zone and I'm starting to like it. Its more about feeling comfortable in my own skin than being comfortable in any given situation. Why was I so scared all my life? Really, why??????

MBTI still exists for the same reason churches exist - someone is making money. It has poor test-retest reliability and it predicts nothing about behavior, career suitability, or anything else.

[psychologytoday.com]

I am an extrovert all the way.

Psychologists have found these personality tests to not be valid or reliable, and they are not widely used anymore due to this. However, I still find them to be fun to take, and even though some people get different results when they take them again in the future I have always gotten the same result. INFJ-the explanation fits me well, and I even have chosen a career in one of the "Jung Effective Careers" for my results.
As to whether there are more introverts than extroverts on here, I have no idea.

Im definitely an introvert. Im an infp, if memory serves.

Maybe introverts are more likely to engage with the MBTI paradigm?

Maybe there is a correlation between introversion and atheism/agnosticism--with a stops at introspection en route?

I dunno. I'm INFP/INTP, heavy on the "I".