re: Is one National Championship* in the last six seasons a Dynasty?

Bama will always be a dynasty. We can afford to have years off here and there, even stretches of years. The overall quality of the entirety of Bama's accomplishments make them a continual and generational dynasty.

Also, the 2020 team being the best college football team to ever exist earned Bama some extra buffer time as far as dynasticism is concerned.