The 100k USD vs. 200 bitcoin thing demonstrates the value of staying in school regardless of whether you could luck out and become a millionaire after dropping out. I'm not saying you have to get a PHD or even go to college, but at least finishing high school should be mandatory for some rudimentary skills, knowledge, and life experience.
Unless he was using part of his money to pay for private tutoring by "quality" teachers, in which case I withdraw my objection partially.
Good point. He seems to have many side projects going on at all times. A true entrepreneur. It is debatable whether he would be able to really pursue all of those things while staying in school. He could have accomplished the investing returns likely either way though, as you mentioned.