Tell me, how big of an issue is it? I don't think it is a problem.
At all.
In fact, if I knew I could hire an up and comer that has a relative that was an NFL coach, that's a plus in my book.
But, again, how many coaches are there in the NFL.....and how many of those had relatives that were NFL coaches? I bet the percentage is low and it isn't exactly shocking that a kid, or young man, would take an interest in what his father has or is doing for a living.