I don't think comparing Sheedy to Colbert is a "substantial" comparison.Ya mean like Sheedy serious?
So from your reasoning he will never be a good coach because he's not serious enough on TV. OK.
I have neither said he would be a good coach or a bad coach, I merely responded to someone else's opinion that he wouldn't. Which was based on a similar rationale to yours.
Was Matthew Knights serious enough for you?
The Martians must have landed, sorry can't say that it's not serious enough. An AFL coach would never make a comment like that.