Maybe if you look at the roster, but not at the starters.
I count this year as “1”, so it’s not that a player has been in the league x years, it’s that this is his xth year in the league.
I count the offensive starters as:
GR Saffold Barnes Brown Hav
Kendricks
CK (for now), Gurley Britt Tavon Rookie
That’s an avg. of 4 years in the league, with 6 of them in their 4th or more year.
The defense is obvious except I count Alexander as the FS.
The defense has an avg. of 5.27 years in the league, with 8 in their 4th year or more.
That;s a total of 14 starters who are in at least their 4th year.
That;s not young, that’s in their prime.