Yep. Maybe we differ in our understanding of the phrase "states' rights argument" but the very first sentence you quoted screams "states' rights" to me - "Today

Yep. Maybe we differ in our understanding of the phrase "states' rights argument" but the very first sentence you quoted screams "states' rights" to me - "Today, however, the Court takes the extraordinary step of ordering every State to license and recognize same-sex marriage."