So here is where you get it wrong.
It's not about gays marrying gays. It's about the removal of gender differences in the whole of society.
So Bruce Jenner is a macho man one day, and next day he is a woman, and we should not laugh. That's normal?
Gays will now sue for anything they perceive as slighting them. Like Pat Sajak had a man contestant on Wheel of Fortune who said he was getting married soon. Sajak asked him who was the lucky girl? Later, he had to make a public apology, because the man was homo and was offended.
The homo movement has become an in-your-face, pounce-on-you movement.Normal people are scared to say anything and the homos are on parade. Every TV show now promotes the homo agenda, and try to sanitize it as some human rights thing. So don't drink the cool aid. That's a wicked, wicked thing they did yesterday.
Gender differences are not ad hoc concoctions. They are a consequence of biology. Jenner was "normalized" per his biology. Normal people include gays, bi and transgender people. It has always been the case. Rights in society are not hierarchical. One merely has to be a human being to tap into the full compendium of rights available. When sentient robots or cybernetic humans come on the scene they will enjoy those rights.