No, I don't think you can conclude that the parent poster doesn't get that nuance. The Supreme Court has ruled on the freedoms for gun rights, as well as abortion and gay marriage. The parent poster could be interpreted as criticizing the hypocrisy for conservatives who believe in Constitutional authority of the court to rule on Constitutional freedoms.
Reading comprehension, friend. They OP stated they don't understand the conservative argument about abortion "since it doesn't hurt others like guns".
They can only hold that view by dismissing the point of view that it does hurt others. By ending a human life. Nothing hypocritical (aka "convenient") about it.
What on earth does constitutional authority have to do with it? Hold the word salad and stick to the meat.
