If you'll forgive my autistic, armchair psychology analysis, that's kind of the main issue, in a way. SJW's, and leftists in general, are primarily motivated by envy, jealousy, and laziness. I firmly believe that these people, upon seeing a happy, loving, heterosexual couple, are simply jealous that they don't have that, but also too lazy to do anything about it. It's why they constantly attack and denigrate the brave, heroic, beautiful characters of old, and why all of the characters they create are whiny, petulant, childish, and ugly self-inserts. They're too lazy to change themselves or aspire to something greater than they are, so they must create new "heroes" that they can relate to, characters just as ugly and deficient as they are.
When they see Bayonetta, a character they assumed to be some kind of feminist icon for "girl power," suddenly in a loving, heterosexual relationship with children, they lose their shit, because suddenly the character they loved is now an object of envy and resentment. It makes them feel inferior and weak, but rather than channel those feelings into self-improvement, they simply throw a tantrum, cry about their contrived "oppression" dynamics, and then wallow in their own laziness and egotism.
It's kind of like discovering your hero is actually a serial rapist who kidnaps, rapes, and murders children, except since these are SJWs and they embody sin and vice rather than virtue or righteousness, they find out their super rad-fem girl power hero is actually a good person, a mother, and in a loving, heterosexual relationship.
