So universities are conspicuous consumption, internships are conspicuous consumption, entrepreneurship is conspicuous consumption. Perhaps the simple fact is that most people are motivated by the need for social validation, and only a tiny tiny fraction of the population is driven instead by things like intellectual curiosity, desire to help others / solve societal problems, etc. So any class of activity that becomes…
No. All human endeavour is social signalling. https://en.wikipedia.org/wiki/Signalling_theory
"Everything you do is either because of X, or you believe it's for some other reason but your subconscious does it because of X anyway."