So there's some sort of rule that you either have to support all amendments to the Constitution, or none of them?
Yes, it's called leftist thinking. They apply the same logic to everyone they don't like.
So if you say that you're Christian, they'll automatically assume that you think The Earth is 4000 years old and God created fossils of dinosaurs to test our faith.
If you say that you're pro-life, they'll imply that you think that abortion should be illegal even when continued pregnancy will result in mother's death.
And If you say that you support gun rights, they'll imply that you have posters of Anders Breivik in your bedroom.