If one studies the reasoning and holdings of this opinion it strongly helps the legal argument that a Christian business cannot be forced to violate its religious beliefs by facilitating a gay wedding. I believe this issue was very much in Justice Scalia’s mind when he wrote the opinion.
That’s exactly right. Some of the most “controversial” rulings about religious freedom — including those that allow native tribes to use peyote for their ceremonies and those that exempt the Amish from things like compulsory public education — are unanimous decisions.