Who Leaked the Anti-Zucker Stuff?

Since Warner Brothers and Discovery came together, people at the company have been leaking things left and right about what's happening with management. Jeff Zucker was ousted before the deal with Discovery can conclude. That plus some things about his kind of relationship with Chris Cuomo on air host who was the brother of then Governor Andrew Cuomo leads to this story. So I think they're disgruntled CNN people, right?