I don't think it's a shtick. It's been remarkably consistent for well over a decade, maybe two.
Urban consistently placed leadership as the top quality he valued for QBs. A close second was mobility. Arm talent and ability to read defenses and make progressions were not the most important things for him. By his criteria he made the right choice playing JT. I think Day has different criteria and that is what played out with the Haskins / Burrow decision process.
Think it was more going from an offense last season that made TTUN look modern to basically running the Saints system this year. No one would have looked great running the 2018 LSU offense behind that offensive line.