Despite your opinion, Comey remains innocent until proven guilty. It seems if his fate was up to you, he would already have been convicted. I do not think your gut feeling on this is very reliable.
If his fate was up to me, I would have him get indicted, tried by a jury of his peers, convicted, and sentenced to prison. That innocent until proven guilty concept applies in court. We're not in court. We are all free to express an opinion on guilt or innocence, regardless of what the outcome of any criminal case might be. People tend to throw that line out there when the person they have some kind of allegiance with is being prosecuted.
And like I previously mentioned, the outcome of a criminal case doesn't mean the person didn't actually do what they were convicted of doing (or acquitted). Sometimes people are wrongfully convicted, like the Trump case. Sometimes people are improperly acquitted, like OJ. Sometimes people who have clearly broken the law are never charged, like Hillary Clinton.