The thing is, this satire misses the point.
Everybody (author of the satire included) always jumps to conclusions that people doing such acts always have some massive fortune or cushion in the bank to wait them.
That's far from the truth. Thousands of people do the same thing every year without anything in the bank (and no sure job awaiting them when they get back).
Some have meagre savings (like $5.000 - $10.000) and use all of them to fund the trip (like year-long).
Others just go at it with nothing, and survive on the kindness of strangers and odd gigs here and there.
I know a few personally doing the latter, but many more doing the first.
Heck, if you have $10,000 in the bank, and are a decent programmer that can manage to find work when he gets back from the trip) you can quit your job, spend 3-4 months in Asia and Africa for dirt cheap, and still have like $2-$3.000 spare to get you through a month before finding some new gig.