Flynn being part of of the special counsel as a witness would have given it away. So, they made it look like he was guilty of something. Which is why he plead guilty to a crime he didn't even commit. Made it look like Trump was the one being investigated. They all knew on day one there was no collusion but continued the special counsel anyway while the sealed indictment count continued to rise.
If Barr, Sessions, or any Trump allies started arresting deep state Democrats/ Obama Administration, the media would go crazy and call it all political. They wouldn't accept it.
The media and 100% of Dems spent 3 years worshipping Robert Mueller. When he comes out of nowhere, like a stealth bomber, and absolutely lays waste to the entire Democrat party, they won't be able to say a damn word about it. Because they spend years praising his character, they will have to accept what happens next. Ball game.