Then can and did marry.
And as it is available to them, it was not discriminatory. Doesn't matter if they chose to participate in it or not.
Creating conditions that allow two of the same sex to marry is creating a new right as it did not exist.
Nothing can change that fact.
Their club, their rules their choice. I care not.
And as marriage is a contract that allows a union between those of the opposite sex, it does not discriminate.
Adding to it same sex is changing the foundation of the contract and is creating that which did not exist before.
It deserves it's own contract.