You keep missing the boat. I've never said that Rizzi should be given a chance or that he will be successful. I've simply said that just because it's rare for special teams coaches to be successful head coaches, that is not a rational reason why Rizzi shouldn't be considered, especially if he's successful as head coach in his 8 games.
OC's and DC's have dominated the head coaching opportunities in the NFL, so of course most of the successful head coaches will have been and OC or DC. That's simple logic.
A more relevant and useful analysis would be to look at the percentage of OC's and DC's given a head coaching position that were successful as head coaches versus the percentage of special teams coaches given a head coaching position that were successful as head coaches.
You're seeing what you want to see.
Dan Campbell ring a bell? Jeff Fisher ring a bell? Mark Levy ring a bell? Marty Schottenheimer ring a bell?
You're cherry picking to defend your opinion as if it's an absolute truth. It is not.
The Saints are going to do what they want to do regardless of what you or I think.