I think we can't know if the girls in the clip are bullies or not can we?!
If not holding gender identity beliefs as fact and questioning is so unacceptable I assume voicing their personal beliefs is seen as bullying?? If they keep voicing their beliefs would that not make them a 'trouble maker'
If this is a stonewall school do t forget they teach a tran child feeling offended is bullying. Just feeling. That's vastly open to misuse. Misuse to silence opposing views as we see again and again in the media with gender critical perspectives shouted as transphobia eg jk Rowling or Kathleen stock.
All we know is what we hear in that clip and it's a teacher ranting at girls who are voicing gender critical beliefs and saying if they can respect others why are they not respected also. They say identifying as a can is crazy. Maybe that can be seen as offensive..... but they are children and not told about better ways to discuss mental health they are subjected to a gender ideology rant and threatened and insulted.
And even if they are bullies that's not going to change the content of that recording. The point is they are whistleblowing