This has been in my syllabus for a number of years and I try hard to follow it. The lectern should not be used for unfair advantages. Faculty have opinions, but opinions on many topics can be unfairly imputed onto students.
My goal is that you learn how to think and not what to think. By its nature, design requires creative (and very human) approaches. These approaches can be influenced by tradition and an experientially rooted bias. Your educational experience should not include receiving any sort of instructor indoctrination.
Where controversial issues arise, I may present information from sources representing differing views from which you can develop your own opinion. These writings will be appropriate and professional presentations of the topics. However, unlike me, you have the right to present your opinions in class, which other students can debate. As an instructor with an unfair access to the podium, I do not share in that privilege. Think for yourself! However, design critiques are an important part of design education and these critiques should not be taken personally, they are intended for your benefit.