“1. A “right” doesn’t mean “something I really want””
That’s not how anyone’s using it in your examples. They mean, ‘in a secular nation, which we are in, there’s no fucking secular reason to treat gays different. or women, or transgendered, or devotees of the Invisible Pink Unicorn, bless her Holy Tint.
“2. Rights come from God, not from the government”
THat’s not what the Constitution says, bubbles. But if you want to go that route, and the Atheists take over, this stance could get you throw into a deep dark hole to wait for your skybeast to come save you.
“3. There is no right to take away someone else’s rights”
We used to have the right to own human beings like property, even buy and sell them, gift them, loan them.
We don’t have that right any longer.
Also, the Christains who complain that they’re losing their rights usually are just butthurt that they lost a privilege of discriminating against gays, blacks, women, etc.