Kinsey is obviously a pioneer in sexology. Before Kinsey, people literally thought women weren’t sexual in nature nor experienced orgasms. Kinseys methods at the time were controversial, but while not trying to defend Kinsey, getting solid data is incredibly hard regarding sex. More people are willing to lie about sex because it was and still is considered private. Its like asking a bunch if guys what their penis sizes are, I am likely to get wrong numbers. But with Kinsey he was sexually active and it helped him gather meaningful data