White is talking about Mayo here.
This is about Belichick.
There's a whole lot of 20 yos that think ppl in their 50s are old. Age diversity is a thing. Mayo himself spoke about it.
I've heard what White said about "these kids being different" from Jules, Ty, Gronk, Brady, Willie and other ex-dynasty Pats. There's just a generational difference that is a factor in how these players can get motivated.
When Bill began coaching the Pats, he was 48 and his players were in their 20s. By 2010, he was 58, 3-time SB winner and his 1st dynasty players were in their 30s. He maintained his control of the locker room through the transition of the 1st dynasty players to the 2nd dynasty players and having Tom available to deliver the message. By 2020, he's now 68, the bulk of his 2nd dynasty players are gone or ageing out and Tom is gone. Yet, his players are still in their 20s.
I'm not sure how this dynamic changes by him going to a new team. He's 72 in 3 months, he won't have any of his dynasty players, and aside from bringing in some of his coaches, he still has to get "these kids that are different" motivated. Unless Bill turns into Pete Carroll (who just got put away to pasture), which is highly unlikely, he'll continue to face this challenge.