Mo Brooks looks like a whiney bitch in that clip precisely because he had no substance. He ends the clip agreeing with Wray and saying himself that whether or not this agent let his political bias affect his work doesn't matter because it gives off the appearance that it does. Mo Brooks is actually doing the thing you're here complaining to me about. He's not wrong, public perception of the FBI does matter whether or not bias is affecting their work but the whiney bitch part is that Wray is not even disagreeing with him. This agent is on leave and under investigation. What else do expect the man to do?