MM--at our previous gym, there were several occasions when one of the coaches for the 9/10s and elites would storm out. Yes, it shook the girls up, but really made the coach look stupid. I think it accomplished absolutely nothing.
Yes, my gymmie would be made fun of while trying to learn her L8 skills(she wasn't alone) and at one point when she was trying a Yerchenko that the coach said was "scary", was sent to do extra strength and not vault anymore. Now, if the vault was scary, then the coach should have spent some time correcting what she was doing wrong, send her back to doing timers---whatever. Instead she was banished to another area of the gym to do strength. That's why this gym started with 7 girls trying to make the L8 team and ended up with 2 competing for them this season. Of the 5 that left, mine is the only one still doing gymnastics