Earlier quoted context omitted.
I agree. It's just a political rant disguised as a database article. "They do not grasp that men and women are interchangeable" - sure, because men can give birth too. Right?
marriage isn't about giving birth.
For the female: make sure the provider doesn't run away.
For the male: monogamy gives non-alpha males a chance of having offspring.
For the child: life support.
For government: bind people into clumsy units that you can tax, threaten etc. at will.
For ethnic and religious groups: arranged marriage is a way around natural selection, letting you enforce "proper" genetics and upbringing of the next generation.
When people start talking about gay marriage, all of this gets instantly forgotten.