Lol. I agree there is more than one way to skin a cat, buuuttt
Seifert went 14-2 his first year and he won a SB with Montana (and Young as QB2) and a team that had won a SB the year before and was peaking during what was then their second act of greatness. It was also before the new FA rules and salary cap, which made the idea of roster and coaching continuity much more realistic.
That “ancient” scenario bares only superficial relevance to what the Saints are experiencing now.