The Minnesota Vikings’ competitiveness

There has always been a clear weak link in their division.

After Green Bay won those first two Super Bowls, they had like 3 winning seasons total until 1992.
Tampa Bay was so bad the division petitioned to have them removed.
Chicago has been in a rut pretty consistently as the NFL has prioritized the pass more.
The Lions (which was sufficient enough to say until about a year ago)

They excel at keeping good things together and making swift changes while remaining patient through the change - even when their ownership had zany things going on in their lives.