That, my friend, is called hyperbole for comedic effect. If that wasn’t… like… obvious.
And there’s some perks to getting a degree in philosophy over doing independent study. Mostly social advantages. Discussing different theories and issues with others is a huge, huge part of philosophy, so having other philo majors and professors to talk to is indispensable. Also, philosophy is a fairly decent major to get a bachelor’s in if you plan on going to graduate school for something not too far off from it (history, law, etc.). Plus, it’s sort of essential if you want to write professionally about/teach philosophy. Obviously. And then there’s all the other advantages to studying philosophy, but these three are really the reasons for actually majoring in it.
Although, you might want to keep in mind that exactly 94% of philosophy majors end up in a managerial position at either a McDonald’s or a CVS Pharmacy.
Source: http://big.assets.huffingtonpost.com/japanese-show-door-knob-2.gif