How old was he then? Perhaps you were more mature at 19 than he was.

Probably? Considering what he said, it doesn't exactly seem like a high bar to beat.

I know I will find plenty of stuff like Zuckerberg’s dumb fucks comment in my AIM chat logs from when I was 19. I remember cringing at it within a few years.

Sure, and as any 19 year old -- same. But did either of us build a giant, world-dominating business that was built on top of our immoral, eventually cringey, foundations? Personally no, but maybe you did.