Who is wrong on this is obviously the SCOTUS and for years and years, States have regulated marriage, now SCOTUS comes in and overturns State Law. That is what is wrong.
“When Congress returns to session, I will be introducing a constitutional amendment to prevent the federal government or the courts from attacking or striking down state marriage laws,”
So this would require a Constitutional Convention?? Sounds like it or something of that nature. Ratification by states.