Do you really think so Billy?.
James, TAA, Rice, Bellingham. Mount, Sancho, Foden, Saka and Greenwood (who would have been in the squad if fit) are all 22 or under. And in the age group just above there are players like Henderson, Chilwell, Shaw, Grealish, Rashford and DCL. That's two thirds of a squad that are, in theory, still to hit their prime. It's by far the youngest England squad I can remember, and by a big margin too.
I'm not saying Southgate will utilise them to the best of their ability, but you can't accuse him of not selecting our youngsters. There are more I would have chosen too. Godfrey and Tomori are better options than either Coady or Mings and I'd definitely have found room for Maddison in a bloated 26 man squad. But apart from those 3 I don't think you can put a solid argument in for any other youngster who has been overlooked.