I suppose this is similar to where people come down on the Lance Armstrong debate. In my mind, every single thing the guy received in his life in athletics, every single thing, was a complete fraud. Yet some will go to their grave claiming that the end result of donations mollifies everything. To each their own I guess.
Valvano, despite assertions in 1990 that the number was higher, I believe it was later proved, graduated a grand total of 3 players in 10 years. He also presided over a point shaving scandal and a cash for shoes scandal.
To my knowledge, he did not have a "dream to defeat cancer" until he was stricken with the disease. While that may not be a sticking point for many, that's something that's always hard to reconcile.
I have been personally effected by the disease, having lost my father 8 years ago to pancreatic cancer, so I'm well aware of the pernicious nature of the condition. I've donated to Jimmy V foundation, along with the Lustgarten foundation, on several occasions, but I can't say I consider the face of either organization (Valvano, posthumously, and James Dolan) a role model in any regard.