I see divorce as a secondary cause, a consequence of depravity and general disobedience to G_d.
An unintended consequence of the bra burners??? Probably not. Absolutely it was intended. Italian communist Antonio Gramsci proposed sexual debauchery as a way to destroy the nuclear family, which he saw as the bulwark against socialism. Break down the family and the government raises the kids.
An important cadre of Gramsci's ideological heirs in Germany were the Frankfurt School. Among them was Erich Fromm (so there's your 'bra burner' connection). Their pitch became known as "Cultural Marxism." When Hitler took over he chased those "communists and Jews" out of the country into the Roosevelt administration's waiting arms, quickly to be ensconced in the American university system.
Verily. But speaking what many have concluded to be the unvarnished truth on this forum will not likely win you any Dale Carnegie awards.