Pardon my frankness, but that's just stupid. Say for example there is a tsunami, a bunch of people lose their homes, and are then forced to migrate. Would you say that their migration was due to the tsunami? Or due to them not having a home? It's both, but discounting the tsunami as if it's a minor detail is just convenient argumentation that an inter fan would use in this case. Without calciopoli inter would not have managed to win the titles they won, they would not have been able to have easy leagues, they wouldn't have had the allure that they have to sign particular players, and they wouldn't have had the muscle to win.
On second thoughts, you're right. Inter did not win all they won because of calciopoli. There were other factors involved. Like for example, favourable refereeing, especially in that tainted champions league trophy.