From what I read it is not a states right argument but an argument that the supreme court is supposed to interpert the laws not make them. Some quotes:
"Today, however, the Court takes the extraordinary stepof ordering every State to license and recognize same-sexmarriage. Many people will rejoice at this decision, and I begrudge none their celebration. But for those who believe in a government of laws, not of men, the majority’s approach is deeply disheartening. Supporters of same-sexmarriage have achieved considerable success persuading their fellow citizens—through the democratic process—toadopt their view. That ends today. Five lawyers have closed the debate and enacted their own vision of marriageas a matter of constitutional law. Stealing this issue from the people will for many cast a cloud over same-sex marriage, making a dramatic social change that much moredifficult to accept."
"But this Court is not a legislature. Whether same-sex marriage is a good idea should be of no concern to us.Under the Constitution, judges have power to say whatthe law is, not what it should be. The people who ratifiedthe Constitution authorized courts to exercise “neither force nor will but merely judgment.” The Federalist No. 78, p. 465 (C. Rossiter ed. 1961) (A. Hamilton) (capitalization altered)."
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."
"Today, however, the Court takes the extraordinary stepof ordering every State to license and recognize same-sexmarriage. Many people will rejoice at this decision, and I begrudge none their celebration. But for those who believe in a government of laws, not of men, the majority’s approach is deeply disheartening. Supporters of same-sexmarriage have achieved considerable success persuading their fellow citizens—through the democratic process—toadopt their view. That ends today. Five lawyers have closed the debate and enacted their own vision of marriageas a matter of constitutional law. Stealing this issue from the people will for many cast a cloud over same-sex marriage, making a dramatic social change that much moredifficult to accept."
"But this Court is not a legislature. Whether same-sex marriage is a good idea should be of no concern to us.Under the Constitution, judges have power to say whatthe law is, not what it should be. The people who ratifiedthe Constitution authorized courts to exercise “neither force nor will but merely judgment.” The Federalist No. 78, p. 465 (C. Rossiter ed. 1961) (A. Hamilton) (capitalization altered)."