>>150103313
If you remove Johnson their average is 26.76, which puts them just behind the Steelers. But that's not really fair without removing outliers from other teams. For example the Steelers have 41 year old Rodgers. The Falcons have 36 year old Cousins. The Niners have 39 year old Jon Weeks.
The Commanders are the oldest team in the league, by a significant margin.