I see the problem as 3-fold.
1) Underwood's recruiting style. More substance over flash. No bull!!!!. Kinda like Weber, but probably more personable.
I think by now we all understand he's pitching his system, player development, etc. I don't think he's one to walk in a home or a visit and blow the doors off a recruit with a fancy, flashy pitch.
2) University prestige...Illinois isn't where it was 10 years ago in terms of perception and that IMO matters. Weber and Groce tanked this thing.
3) The FBI Investigation. We can spin it until the cows come home but this matters....a lot. It's a dark cloud that might never bring rain, but it's there.
Guilt by association may not work in the judicial system, but recruiting isn't law. Opposing coaches are likely planting this seed and I don't blame them.
Do I think Underwood did something shady? No, I don't. I think Evans went rogue. But...if you're a parent...or recruit...and you or your kid is being recruited by a coach whose former assistant coach is part of one of the biggest college basketball investigations in recent memory...wouldn't you be skeptical?