It's not about me. I don't think that you read what I wrote.
Are you saying that someone who didn't finish high school can get into Harvard medical school?
Most people in the world have zero choice.
What would you do if you were born in some place like, oh, East Saint Louis or South side of Chicago, and your mom was a prostitute on crack and you never knew your father. All the role models that you saw were criminals, and all your peer group that you grew up with were into crime, and when you were 13-, 14-,15-years-old, you were arrested 8 or 10 times. Your school was rickety, teachers were terrible, you never got 3 meals a day so you couldn't concentrate in school.
Or you were raised in Bengladesh and don't even have access to electricity, let alone a computer.
What if one just doesn't have the brainpower? My in-laws taught in schools in very nasty areas, and there were kids that they spent hours with trying to teach them how to add two 2 digit numbers and the student just couldn't do it - things that would take you 2 minutes to understand, some cannot understand at all.
What if you work in some town in the middle of Nebraska and there is only one significant employer in the area. You have no university degree, but scraped oneself up to being a plant manager making $120K per year, but you HATE it, abhor it, your superior treats you like trash. But you have a wife and 5 children, and you live in a huge 5 bedroom 6 bathroom house with 5 acres in the best area of town. Your wife loves living there and your children love their schools and are successful in them. And your wife's parents live nearby, and they both have Alzheimers Disease, so she takes care of the daily. But you hate the job. and there is only that one employer. Are you suggesting that the person, with a high school degree, sell their home for $500K, moves to SF and buys a 1 bedroom condo in Palo Alto for $800K and all of them live in the one bedroom, including the wife's parents? And the guy goes out with his high school degree and find a job as a computer programmer working at Google, which is harder to get into than getting into Harvard University? No. The man has to stay in his job, and hate it. But get his happiness from having a happy family, a nice home. Stuff outside of work. Work is not the main goal in life. Family and friends are.
You really don't have too much experience in life, or have not really thought it through.
Just because you swallowed that pill doesn't mean that others should do the same.
It's precisely when the odds are stacked against you (be it education/age and/or whatever) that success it most impressive.