Press Maracich, Wally English are two coaches whose programs didn't survive their sons and probably influenced my thinking.
The turmoil during Jessie Evans tenure makes me think this isn't a good example.
Nelson's career did not extend past Brandon, this is not a knock on Brandon. It's not a knock on Nelson. It has to do with human nature metrics between coaches, sons, players, team.
The reason it often isn't good for a program has more to do mostly with coaches losing some of their drive after the son moves on.