So do you just hate KOC? Did he kick your dog or something?
Let me see if I can list your arguments against him, as they have changed numerous times:
1. Hiring KOC would only be done because Haskins lobbied for it, which would undercut Rivera as the new HC.
2. Hiring KOC would only be done because Snyder wanted it done, which would undercut Rivera as the new HC.
3. KOC's brief stint as THE guy calling the plays (which has been widely reported as the last 3 games) was, in your words, an abysmal failure. Therefore, he is an abysmal failure that should not be given a shot because there is no way he can learn from mistakes.
You saying all of this does not make it true, nor does it make it factual. Get out of your own head and try to see things from other people's perspectives. But, in the end, that doesn't quite fit your narrative.