That's your one vs 56 times the Court said gay marriage was up to the states in Windsor 2013...and then left off with Windsor saying it was only legal in 12 states...the 13th claimed at the time...California...was excluded from that final tally.
The American Public who has read Windsor knows that Windsor is a decision regarding Federal law not being being able to ignore State marriage law.
The American Public also would know that Windsor makes it very clear that such State laws are subject to constitutional guarantees.
Subject to certain constitutional guarantees, see, e.g., Loving v. Virginia, 388 U. S. 1, “regulation of domestic relations” is “an area that has long been regarded as a virtually exclusive province of the States,” Sosna v. Iowa, 4
State laws defining and regulating marriage, of course, must respect the constitutional rights of persons, see, e.g., Loving v. Virginia, 388 U. S. 1 (1967) ; but, subject to those guarantees, “regulation of domestic relations” is “an area that has long been regarded as a virtually exclusive province of the States.”Sosna v. Iowa, 419 U. S. 393, 404 (1975).
The States’ interest in defining and regulating the marital relation, subject to constitutional guarantees, stems from the understanding that marriage is more than a routine classification for purposes of certain statutory benefits.
But there is no such departure when one State adopts or keeps a definition of marriage that differs from that of its neighbor, for it is entirely expected that state definitions would “vary, subject to constitutional guarantees, from one State to the next.