Saints to hire Bo Davis as defensive line coach

There is something I’ve noticed.
Pre 2000, you had a lot of coaches that have had multiple 15-25 year stays.
And I’m not just talking about the big programs. Even the smaller ones had coaches with that kind of tenure.
I don’t see that anymore. Except for one or two coaches, most tap out after seven years or so.
Post 2000, colleges are more willing to fire coaches on the spot.
I feel there’s an argument to be made that programs no longer exist. A top recruit doesn’t leave HS and sit for 1-2 years and learn. He either plays or jumps to another team that will pay him more/increase his playing time to boost his draft stock. It’s not about long term building a team and culture and teaching young guys the finer points of the game. It’s just constant churning. I wonder how that impacts their readiness for the NFL? Maybe that’s why we’re getting college coaches who can connect with young guys and teach the game