Here is the part where sex distinctions are discussed:
8.9 Overcoming the sexual binary
The categories "man" and "woman" are social constructs, but the idea of two sexes does not accord with reality. We understand a human not as a person who is subject to a lifelong gender identity as a man or a woman. Our goal is to create a society in which everyone can freely decide for themselves which gender identity they would like to adopt. As Green Youth we argue for the diversity of gender identities to be finally recognised. A first step to envisage this is a third option when specifying sex to government agencies and in official documents. There should also be the opportunity to refuse to specify. Our perspective is that specifying gender should completely disappear as a category.
Such ideas are no doubt attractive to those homosexuals who do not have a clear identity as men or women. But they also fit in with the liberal idea that our lives should be individually self-determined and that predetermined qualities, such as our sex or our race, are artificial social constructs that should be made not to matter.
The Green Youth resolution is more radical than the typical liberal attitude: when liberals want to make our sex not matter they do so by advocating unisex parenting and such like rather than wanting the categories of man and woman to be abolished. In some ways, though, the Green Youth position is the ultimate expression of the liberal position: it demands a diversity of freely chosen sex identities to replace the binary of man and woman.
And is the Green Youth position all that much more radical than where liberalism has taken us when it comes to our communal identities? For Westerners, at least, these identities have been declared to be social constructs and abolished in the name of diversity. The Green Youth want to complete the job already begun in a liberal society and abolish our identities as men and women in the same way.
The Green Youth also have ideas on how marriage could be "queered":
3.3 As Green Youth we reject the privileging of marriage between "man" and "wife" and are committed to a family contract that allows all people to express their love equally and to take responsibility for one another. Since intimate relationships exist outside heterosexual and monogamous partnerships, it must be finally legally recognised when non-heterosexual couples or people living in polyamorous relationships or female friends take over the care of children together. Queer people shouldn't be discriminated against any longer in tax law nor in adoption law. In respect to this, we also demand that more than two people should legally qualify to be regarded as parents of a child. Family is when people care for each other and take on responsibility. We therefore demand that any form of family is supported and valued by society and before the law to the same degree. However the protection of marriage should no longer be anchored in the Basic Law. We want to abolish marriage as a state institution. Families deserve state protection, not marriage.
What's to be said of all this? First, note how open-ended the definition of family has become. It is just any arrangement of people who care for each other. And note the radical consequences of accepting such an open-ended definition. You can have any number of people being recognised as the parents of a child; you can have groups of friends becoming parents to a child; you can have polyamorists doing the same. The link to biological paternity and maternity is entirely disregarded, as is the role of motherhood and fatherhood. Literally any form of family will do.
Again, this is a more radical expression of ideas that are already fairly mainstream within a liberal culture. A lot of people now understand marriage to be a "love ceremony" and that tends to suggest the idea that a family can be anything. An Australian newspaper columnist, Andrea Burns, expressed the modern view well when she wrote:
the days of the white bread, nuclear family are over. There are many ways to commune, love and create a home ... It’s inconsequential who makes up that circle of love...
There is a weakening or a loosening of ties in all this. Just consider the definition of family offered by Sam Page as executive director of Family Relationship Services Australia:
The definition I like now is whoever you share your toothpaste with, that’s your family.
I'm not sure that toothpaste sharing quite measures up to fulfilling your masculine nature in the role of a husband and father, or the biological relationship of paternity connecting father and child, or the complementary union of a man and a woman within marriage and family.