Yeah, I see this happens. Belichick’s son comes immediately to mind. But I just don’t see it happening on a large enough scale to crowd out minorities.
There is an old boys’ network in the league, and you seldom see black coaches be a part of it. That tells me it’s less about nepotism and more about racial bias.
The league has several programs in place to promote development of minority coaches and administrative staff. To me, that shows the league understands it has an issue on it’s hands that needs to be addressed and they are taking action. It may not seem sincere, but the proof is in the pudding.
Start by making a rule that you can’t hire your kid if he has a mullet.