Why do you not see this as being a problem? The sequence of events Sam sketched out is pretty logical. It hinges on machines being able to optimize for "survive and reproduce", which feels very plausible to me.
Forbes has a number of such 30 under 30 lists - each one linked in the blog post (Consumer Tech, Enterprise Tech, Food & Drink, etc) is a separate list of 30. So the number of people named to Forbes 30 under 30 this year is greater than 30 total.