I'm not arguing to make Rizzi the head coach, but IMHO going for 2 was the right call. What wasn't the right call was the play they ran. Taking Rattler out of the pocket running to the short side giving him only one receiving option was a terrible design. If the Saints had a run a smarter play call, they likely would have scored and no one would be saying it was a bad decision to go for two.
So, kudos to Rizzi and BOO to Rizzi. IMHO, he made the right decision to go for it, but also the wrong decision with the actual play that was run.