What is the "nuclear family" or so-called "traditional" family? In short, it's a social unit used as an instrument of oppression on the succeeding generation. Outmoded and often racist ideas are passed from one generation to the next via the so-called "traditional family". When children are born into a "traditional" family, they are immediately indoctrinated by their parents with: oppressive, hierarchical, patriarchal/authoritative/fascist and viciously racist ideas ... this spans generations. Think of the "traditional" family as a generational chain of oppression.
Progressive people of the world (such as myself) work tirelessly to instill ideas of justice, equality, and egalitarianism in youth. However, we progressives are constantly fighting against unjust and often racist ideas which have polluted the minds of children... these ideas coming from, of course, the children's parents (who were themselves polluted with the same ideas FROM THEIR PARENTS). This cycle of oppression MUST be elimated... henceforth, the "nuclear family" must be eliminated. Only without the "nuclear family" can children be taught the virtuous values of equality & justice via the schools and other instruments of managed socialization.