Yeah, he calls it a "filtering function"... yes, to filter out people without safety nets.
Its also impossible if you have any health problems, or need to save for retirement or have student loan debt.
Its really only possible if you're young and healthy, so this would filter out probably 80% of adult population
It is a filtering function and it's the wrong filtering function. Like others have said, it filters out anyone with a great idea who is unwilling to put their lives in danger, or more importantly the lives of people dependent on them.