Instructor behavior observed:
- Comparing students with each other
- Blaming students
- Insulting students
- Impulsive decisions
- Lack of discipline in teaching martial arts
- Going mostly spontaneous and with the flow
Well, an instructor with decades of martial arts experience might have some unfavorable traits.
This behavior might result in student mind noise. It takes lots of meditation to fend off the noise.
How to deal with it? If it's not possible to change the place you go to.