The point is that both boys and girls can bully and experience bullying, but it manifests in different ways.
I used to have collective and individual conversations about bullying and would adapt them accordingly. Those who are bullied need the primary help to move on, not get stuck in a cycle of being bullied, and not let it damage their lives (most instances); and the bullies need to know why they can't continue and what the sanctions will be now and going forward.
Otherwise it's just firefighting each time there's an incident.
And the path of least resistance tends to removing the victim rather than confronting the bully. And we always get more of the behaviour we reward.
See also UK politics in regards to how to appease mobs.