When you remove gender differences, you destroy the family and social fabric which forms the foundation of society.
Don't drink the cool aid.
None of us have the ability to remove gender differences. We however need to recognize there is more to the term than is traditional so it is merely improving on the understanding of the diversity in the human community.
Humans always had slave cultures in the except until recently. These always acted to destroy family. The Arabs took some 14 million black Africans mainly women. The men they took they castrated. Today, Arab cultures still have very few black people since they never cared to foster family groups and slaves never replenished themselves.
Replacement of slaves on Brazil was very cheap. They saw it as uneconomical to rear a slave culture that cared for children. It was an added cost they could avoid. Even in North America where replacement costs were expensive it was still not conducive to institutionalize families so kids were often sold off rather than kept and slave families rear.
Indentureship never cared for family unit either since they ratio of men to women to the colonies were some 20 to 1 Your thesis that Gay people will destroy family is weak. The family did not die with slavery or indenture ship so gay people will not kill it