Mutilating yourself is a pretty over the top mental illness, and common sense tells us that a legitimate researcher into sex is not busy sharing research assistants with his wife.
I would support Kinsey collecting information on child molestors because such information could be useful to society. But one gets the strong impression that Kinsey was a pervert first and a serious researcher second. I think this movie will have the opposite effect to the one intended.
His self mutilation is indeed reffered to in the film.
You make a good point. Kinsey's problem wasn't that he collected the info, it's that he spun it so that it implied that raped children were actually sexually active beings.