He isn't the only person who talks about the dopamine driven feedback loops. Chamath Palihapitiya, who was one of the first engineers at facebook, talks about how they all used to gather in meeting rooms and have intense back and forth discussions on how they actually build this thing so that the entire world wouldn't be able to resist adopting it.
He talks about how at the time they really didn't foresee the foreboding future implications of what they were trying to build at the time.