While he's not
entirely incorrect as entrepreneurs do need to be somewhat irrational to carry their beliefs to fruition when nobody else sees what they do, why would you expect someone who has probably never worked outside the education system, and if tenured can't be fired for outright lying to students, to have a unbiased or rational opinion about something they know nothing about?
My recommendation is (a) CLEP out of the course if it's required, or (b) ignore the unsubstantiated bias (that's found in many schools these days) and try to find some nugget of truth in the drivel he's shovelling.
When you find a professor who has experience in their field, is open minded, and actually keeps up with the current thinking on their subject matter, it's a "fantasticalicious" experience to learn from them. Sadly, they are few and very far between.
If you're going to school to become an entrepreneur, I can say with substantial experience that you are wasting your time and money.
Entrepreneurialism is NOT something that can be learned in school. It must be learned in the trenches. In fact, I believe that post-secondary education is the antithesis of entrepreneurialism.
If you're going to school to learn Business Admin, goodonya. Stay on task.