It sounds like a lot of people are worried, because there's a lot of shooting from the hip going on.
First, this is not a litmus test of love or trust for Cal. Thus, saying that "if you trusted him before, why would you worry now" is beside the point. This is not about Cal. If it is about Cal, it is only about him to the extent he can ppolice every action the players and their families take while not in his presence.
Second, this is not about what the FBI might do. This is about the NCAA. Players who take bribes from anyone, including Adidas and Nike, are ineligible to play. How many times have we had the strict liability discussion? At least for UK, Memphis and much of the known universe (but not Duke), it doesn't matter whether UK knew or should have known about the impermissible benefit. Games played with ineligible players will be stricken from the record.
Third, this IS about how much you trust each and every one of our past and present players and each and every one of their family members. I don't even know their family members. Cam Newton's daddy got $$, but Auburn never got penalized. I wouldn't expect that treatment for UK.
Fourth, we just became aware of a new fact. There is at least one giant criminal organization out there trying to bribe players-- Adidas. Could there be two or more such organizations? That's a big fact. When I get a new fact on a weather forecast that there's going to be a snowstorm tomorrow, I adjust my thinking to that new fact and put the Bermudas and Jorts away.
Personally, I'm no more worried today than I was 5, 4 or 3 years ago. The families are a known risk, and always have been (as are the players). Camby anyone? While I'm not terribly concerned, I can certainly see how those who are more risk averse than I would be worried right now. It's perfectly understandable to me.
[I will say that if I were a fan of a school that runs a dirty program and has a lousy culture, like UNC for example, I'd be very worried.]