What's an especially productive 22 year old to do?[...] If you're really productive, why not make employers pay market rate for you? Why go work as an ordinary employee for a big company, when you could start a startup and make them buy it to get you?[0]
And though starting a startup can be part of a good life for a lot of ambitious people, age 20 is not the optimal time to do it.[1]
PG seems to be giving contradictory advice or his stance seems to have changed on whether 20 year olds should start a startup