Some instructors are a wailing bore. After 5 degrees, I am here to bear witness.
At various times I have talked to students from other schools. They will really tell you the way it is.
Some individuals drone on until everyone is either falling asleep or sleeping with their eyes open. Their eyes glaze over.
As I was trained to be a school principal, I am aware that evaluations and gentle feedback can be helpful. I am referring to evaluations of instructors.
Their peers and supervisors need to gently help them see themselves and re-ignite their excitement. Sometimes their lack of self confidence is inhibiting release of their emotive aspects that can present enthusiasm.
In house workshops can be helpful.