To give a bit of context to why this is creating this sort of reaction where we all know of plenty of examples (Steve Spurrier Jr, Brian Ferentz, Shane Beamer, Skip Holtz, etc) of sons being part of their father's staffs in college football, everyone of those cases I mentioned involved the son first going out and proving themselves at a job outside their father's nest before getting hired under the father. The culture of football coaching is very much a "pay your dues" sort of thing. These low-level assistant jobs are hard and thankless, intentionally and needlessly so in a lot of cases, because that's the culture.
Miles Smith skipped the line, and that's naturally going to cause a reaction. Which is the real shame of it, because at the end of the day, Lovie has done no favors for Miles' career in football here. He's perfectly capable of landing him a job somewhere else under a coach Lovie knows and trusts to pay his dues, but foolishly decided to take a shortcut that isn't in his son's best long-term interests.