There's little that's specific to startups here. What he's arguing is that being independently wealthy doesn't work the way one might naively think. But few things do work the way one might naively think.
Certainly his title is false though. Obviously it depends how much you clear.
Everything that has been written about how anything works explains how it doesn't work the way one might naïvely think. So, read everything that's ever been written about how anything works, and you'll have your answer.
Certainly his title is false though. Obviously it depends how much you clear.