Yes, they are. by the court. Marriage has never included same sex couples for hundreds of years. Now if a legislature wants to change that, as is their right, I am all for it. But forcing it via judicial fiat is changing the laws.
It was changed legislatively when the 14th amendment put equal protection under the law into the Constitution. That was not done by 'judicial fiat' that mostly meaningless irrelevant term your types like to toss about.
It was changed legislatively when laws were passed against gender discrimination.
And a reminder:
the 9th amendment says -
The enumeration in the Constitution of certain rights shall not be construed to deny or disparage others retained by the people.
The issue of SSM being equal to opposite sex marriage is up to the State legislatures, not the courts, except for having states recognize SSM's from another state that implemented it legislatively.
Yes, rights are inherent, but they are only protected when enumerated under the constitution, or added via the amendment process. If you want to argue the 9th as invoidable, I can create the right to boff people with a foam hammer and then claim it as a right under the 9th. No person is actually harmed, so you can't go with that.