It has to do with how the university educated are socialized. They believe it's gauche to admit to pecuniary interest when looking for a job. They have to make it like a quasi-religious mission for which they are incidentally paid. It's intensely stupid. Obviously Facebook invites it and has consciously adapted its recruiting message.

Back in the 2000s before the financial crisis it was popular to portray the young as nauseating money grubbers who just wanted to get a job in banking. That wasn't great either, but I would rather honest greedheads rather than greedheads who lie to themselves and others about what they're doing with their lives.