Sadly, you over-intellectualize the objections to the profession. In other words, you give the objectors too much credit. From my experience, the majority of objections to the utility of philosophy comes from a growing anti-intellectual cultural disposition. People are less and less interested in having a coherent world-view. They are less and less interested in having or evaluating their reasons for their actions and beliefs. And much more comfortable banging their fists on the table and simply asserting their opinions. They don’t care if their belief in god is silly, or if it conflicts with their other commitments. They don’t care if their actions (or those of their representatives) violate the principles of the same liberal democracy that they rely on and that they would de facto miss badly once it is gone. They simply don’t care.
The original post here, from the NYT blog Opinionator, is an interesting but flawed read. And this first comment nails it. Why do intelligent people devoted to learning have to spend so much time justifying that pursuit?