One of the coolest things I ever heard a martial arts instructor say was “ask me any question you have. If I know the answer then I’ll tell you. If I don’t know the answer then we’ll find out together.”
The humility to admit that you don’t know everything is admirable. And people who’ll try to bullshit you about a position or a technique they know about is deplorable.
Bullshitting your students about stuff you know nothing about is leading them down the wrong path.
Your ego isn’t more important than their development.
If you’re done with learning you should be in the grave.