On 1970s French Intellectuals (Foucault, Sartre, de Beauvoir, Glucksmann, etc.) Attempting to a) Do Away with Age of Consent Laws and b) Decriminalize Sex Acts with Minors

While I understand that childhood has been extended somewhat in the modern times (the fact that 14 and 15 year-olds used to get married in the old days of both Europe and America), I can't help but think that these individuals weren't so much operating out of an extensive sociological analysis but rather from their own idiopathic perversions (Foucault, especially). I could be wrong but I doubt it.