One of the many drawbacks of this "I teach what I am" approach is that it stifles classroom discussion. Any disagreement with the professor's expertise comes off as an ad hominem attack.
In the U.K. there is still work to be done, particularly in schools, stopping the homophobic bullies in the playground and introducing unbiased discussion on gay issues in the classroom.
By bringing current events into the classroom, everyday discussion, and social media, maybe we don't need to wait for our grandchildren's questions to remind us we should have paid more attention to current events.
A Socrates in every classroom.
Alfred Whitney Griswold
Discussion is an exchange of knowledge; an argument an exchange of ignorance.