Sussmann was only found not guilty on not lying about who he did or did not work for, that didn’t debunk that he was feeding a dirty trick to the FBI.
I don’t think he is totally off the hook nor is any of the other “dirty trickster” players.
Did you read this?
https://www.washingtonexaminer.com/opinion/what-durham-proved
He proved it, only for people that will accept it. For many. He was found not guilty, end of story.