I can say from the other side of this that I was employed in the industry while I was still in school, and so by the time I was a junior I was becoming an Informed Consumer, and let me tell you, the realm in which professors are expert is quite a bit narrower than they would have you believe. That knowledge got worse over time, my distrust grew, and it made it quite challenging to finish my degree.

If we want to students to behave this way, we're going to have to change how professors behave too. Mentorship and teaching are two different things, and what you're describing sounds more like the relation one seeks in a mentor, not a teacher.