It kind of depends on who the coach was and what QB they wanted. Maybe they would have wanted Carr, but it seems likely that a coach with no connection to Carr likely would have preferred a young QB in the draft.
Other than Brock Purdy, who literally no one saw coming hence his draft position, what QB that actually looks good have the Saints been in a position to draft since DA has been here? If we didn't sign Carr last season what QB would we have targeted in that draft? Will Levis? Going back to the year before it's Kenny Pickett? Desmond Ridder? Malik Willis? Matt Coral?
Coaches know the leash is short in the NFL, they don't have the job security to keep picking a young QB year after year until one hits unless they have skins on the wall. One of the last two coaches that people thought had that kind of job security is doing TV and youtube right now while the Patriots look even worse than last year. The other took a sabbatical and is coaching the Broncos, where he might find out he doesn't have that kind of job security with a new franchise if results don't come as early as next season.
I like Ross Jackson as a podcaster/Saints specific reporter more than I like DA as a Head Coach but DA has never had the best circumstances since he's been our HC. We have no idea what that looks like. I'm fine with never finding out what that looks like but it's just a comment that doesn't make any sense to me. This isn't the 2018 roster DA is running with here, let alone the 2011 one. That's without factoring in the ridiculous amount of injuries.