The document starts with Red saying he and Sinder believe Bao was poaching artists and editors from them. So they retaliate by poaching them from her back.

What exactly is wrong with that? That they didn't start shit and get into a confrontation with Bao? It just seems to me like they were avoiding a conflict. At what point does avoiding a conflict cross the line into "backstabbing"? Are you supposed to start shit with everyone who slights you?

This is ignoring the Silvervale/Lily shit. That seems fucked up, but the shit with Bao seems proportional to me.