As I said to before - It is the job of the Supreme Court to specify laws that are unconstitutional. That is a simple and emphatic role that they were assigned. If they decide to go political, that means throwing out the Constitution. No argument, no discussion. If you think that they ignored the Constitution, then they were wrong and not upholding the Constitution as written.
If you think that they were making a political ploy, or caving to a political party then you have just accepted that the rule of law is invalid.
I should add that you are RIGHT... A SAD day for America indeed!