While it is certainly true that some professors are timeservers, or that others have been sucked into the 'publish or perish' vortex, this seems a wildly unfair categorization. It has been some time since I was an undergraduate student, but I've been taking certificate classes lately, and I have often been deeply impressed by the passion and energy of the professors under whom I have studied. Sometimes things in the ivory tower are a little far-removed from the 'real' world, but I think you'll find that every niche has its blind spots.

I certainly would prefer a professor who was interested in learning new languages and techniques over one who was stuck on what he or she learned 'back in the day'.