If anything, I think the equality in everything but name is even more insulting. It's like, "Hey, you've proven you meet the minimum threshhold for there to be a societal interest in giving you equal rights to heterosexual couples...but we're going to make sure you'e discriminated against anyway."
It's not meant to be discriminatory. It's giving them equal rights without redefining a religious term.
The state is not religious, and marriage is not exclusively a religious term. Churches may define it as they wish , of course.
Do you have any secular argument against total equality?