I also test INTJ/INFJ on the Myers Briggs scale with a very low extrovert score. I can relate to the way you think.
I reckon intuitives are more likely than sensors to be drawn to the Blockchain for its future possibilities in the world and introverts rather than extroverts to spend the time learning about it. INTPs would be the technical coders and INTJs the visionaries.
I agree that someone's personality is more their Myers Briggs type but as you say there is a lot of truth in them.