This is an interesting thread that has covered several topics.
Having taught many classes and received many reviews from adult students I can say that few teachers exist who's stye appeal to everyone. I find it interesting that a teacher can receive 25 A+ grades, and one D grade from students who sat in the same classroom. I would consistently get comments from the same class like "please go faster" and "please slow down"; "I want more detail" and "too much information for a class like this".
Communication is a two way street. Sometimes the instructor can mis-speak which causes a lot of confusion. Sometimes the correctly spoken message isn't the message received by the student. Students go on mental vacations, mis-interpret what was said, and get confused with the amount of information coming their way.
There is a fine line between arrogance and confidence. If you're not a confident instructor some may not think you are very good. Over confidence can be misinterpreted as arrogance.
I consider people's reviews "one persons opinion". If an expert is recommending a tool to me I don't necessarily think it will work best for me because my mental and physical abilities are different than theirs. But, the tool is probably worth looking at.
Sorry my message is so long, I didn't have time to write a short one.