For the record: Youth Orchestra Conductors should NOT berate and embarrass students. They should not suggest that a player slap another student. And they should not suggest that a player go find another orchestra when they are unhappy with the student’s playing.
HOWEVER …
If a conductor does any of these things the student(s) SHOULD go find another orchestra.
(If it sounds like I’m angry I’m okay with that. Because I’m angry right now.)