Earlier quoted context omitted.
Where do you live? These numbers are fairly local to SF/NYC/Seattle, with other large cities trailing a bit and smaller cities farther behind. That said, in those cities they are far from absurd. I started out similar to you (coding since elementary school) and now live in NYC ~3.5 years out of college. Off the top of my head, I could name half a dozen developers making seven figures, and at least 100 making over $20…
I live in San Francisco, and have for about 4 years. I'm shocked you know the salaries of 100 other developers. Care to share some of the companies that are paying this much to developers 3.5 years out of college? I'd love to corroborate on glassdoor.
I recently turned down an offer from Google for $270k total comp, so they're definitely one of the high-paying companies. I know Facebook pays similarly well, but have no interest in working there. Being in NYC, though, the highest paying are mostly in finance.
I've found Glassdoor to run very low for higher-paying positions, though. Their numbers are all salary as far as I can tell, while a large portion of compensation is in RSUs and bonuses (40%-90% at compensation levels of $250k and up).