Here's an instance of Scalia's ability to ignore reality about SSM.
http://jostonjustice.blogspot.com/
Religious Liberty as 'Refuge' for Marriage Equality Foes by J. Jost
Scalia argues that priests, rabbis, etc. would be constrained to officiate at SSMs against their religious beliefs. It is pointed out to him by the other justices that, that in the states that have legalized SSM, it has not happened and in fact, rabbis have always been able to decline to marry Jews and non-Jews without legal repercussions.