You are reading the evidence through the lens of an eye already knowing what it wants to see.
Much of this "evidence" can be looked at as supporting opposite viewpoints.
If things we so bad that they were "going to fire DD after 2018" had they not won, why is Henry saying he was "going to renew DD's contract?"
Are we being asked to think Henry was not being genuine, but Russo was?
Clearly, losing had a hand in the decision. One can argue the "toxic environment" helped lead to the losing, but apparently it was there in 2018, too.
You can feel certain about this, but I'm not certain at all and don't see how anyone can know, except Henry. Insiders often put spin on statements, and we can all pick and choose which ones to believe or not.