Please. Please stop. You're making my head hurt.
Judicial activism actually means something. It has a real, legitimate, actual meaning. And that meaning isn't "I don't agree with them."
In order for a court to be considered "activist," the court must do something. It must act. Weird, huh? It must make a decision on a case.
The Supreme Court did exactly the opposite of that. It did nothing. Nothing at all. Not one damn thing. Therefore, it cannot be considered "judicial activism" because the Court won't hear the gay marriage cases.
Here's how judicial activism looks in real life: