In the UK civil partnerships were opened to all couplings, but no, that wasnt good enough, it had to be called marriage and it had to be potentially conducted in a church before they were happy. And of course they still arent happy.

It was not the tax/inheritance benefits they were after (the tax benefits were lost long ago, and the inheritance can be arranged using a will) it was to mock the institution of marriage deliberately, as an act of vandalism.

To me it is as stupid as wheelchair users wanting to call ramps steps, because that is what able bodied people use, and why should they be any different?