He very clearly was. He directed DOJ not to defend DOMA Section 3, and it fell in the courts, just like all the civil rights promoters wanted. If he hadn't been elected, it would have taken longer. That's why we forgive him for lying. We aren't stupid.
He also publicly identified as Christian, though he wrote that his parents and grandparents are nonbelievers.
I never claimed otherwise. For that matter, a double digit percentage of people still think that interracial marriage should be forbidden. I'm smart enough to be on the right side of that debate. Eich isn't. Are you?
> Chick-fil A has done their apologies
They never apologized, and they famously kept donating to anti-LGBT political charities after they said they stopped in order to get a restaurant approved in Chicago in 2012.
> What's he got to gain at this point?
Self respect. It's normal to apologize when you've wronged somebody. Not apologizing shows you either think you didn't cause harm or you are too prideful to admit you were wrong.