We don’t know what he told the FBI. We don’t know what he said to the Russians. We don’t know what happened in Moscow, when he took money from Putin.
We know it was serious enough for the DAG to go to the White House and warn them that Flynn was lying, and was compromised. Open to being blackmailed.
And we know that Mueller and the judge know what went down. And both think it’s serious; the latter thinks it’s treasonous. Mueller might too.
We don’t know everything, Ned. But we know enough to draw some logical conclusions. Unless we are willfully ignorant.