If someone is a free thinker and person of knowledge and eloquence that I respect I'd probably be interested in hearing their position on pretty much any topic, not just their narrow field of professional interest. Take Noam Chomsky for instance, I seriously doubt that that many people online listened to his lectures on linguistics, right?
This is very true. I think part of the issue is that there's an element of critical thinking skills that you would hope to eventually acquire _AS_ you continue to listen to any attributed public intellectual. Otherwise you can go your whole life reading Christopher Hitchens from when he was a great rhetorician and contrarian of US foreign policy to his transformation of racist war-mongering anti-theism days.
