Bad take for two reasons:
A) The Saints are still looking like a possible wild card 9ish win team and that’s without a clear-cut franchise QB. They went 9-8 with a WR-hybrid playing QB, they were 5-2 with wins against GB, NE, and Tampa with Jameis as QB. They still have an extremely strong team and signed Tyrann Mathieu and Marcus Maye, two very good players who weren’t cheap, amongst a flurry of other signings. They are still cap wizards and with a franchise QB they are a 11-12 win team.
B) The whole “cap coming back to bite them” thing doesn’t exist if Drew Brees is still here. In a broader sense if they had a franchise QB they’d be a very strong team right now. In reality the cap hasn’t made them take a step back, it’s the curse of trying to find a franchise QB. That’s why when you have one you pay him, because you can maneuver the cap like the Saints and build a good to great roster it’s doable.