it's my personal take and i know many will disagree but:
they distracted the people for decades with this bullshit men-vs-women litigation, to distract them from the systematic erosion of the wages, which is what left politics should have actually concerned itself with.
they attacked the women-men relationship specifically because they knew that love and personal relationships give people enormous strength, and by systematically eroding exactly that (by fearmongering and propaganda), they could weaken the people, making them easier to conquer and subdue.