Eventually I realized I was in a safe, respectful place, and I learned to work with everyone, just as my students learn to do.
Connect and blend with the resistance until they see the error in their perceptions.
I have encountered people who were certainly training with a different intensity and intent than I wanted. I didn't ask permission or discuss it, I just did not choose to train with them. When they asked my why, I was honest about owning by own reasons.
With time and training, we eventually usually bridged that gap.
If they have already learned the lessons, they would not be entering the dojo and asking for instruction.
Guess I didn't know I would be judged harshly for acting on what I believed was in our mutual best interest.