Right. While I actually believe society (and students) would benefit by converting a large fraction of our "liberal arts" colleges into more practical trade schools, your point stands—the problem with the "choose your own adventure" model of undergraduate education is that 18-22 year olds are distinctly bad at choosing the adventure that's best for them, especially when it comes to getting a liberal education. Trade schools for STEM and the trades, but stronger core curricula and less highly-specialized BS in the humanities.