I concur, there had to be a progression.
After Drew retired it was potentially the Saints not having enough weapons. The went in on Olave and tand hoped to get MT healthy along with a few other things like letting Winston be the guy but that failed. Then they looked at QB, brought in Carr...got Thomas healthy and while they improved on wins...the offense itself didn't take a leap. So eyes went to it's the scheme, and here we are.