This isn’t about privacy, it is about marriage law.
Yours is one of those new, stylish, lefty trends, when was America free of marriage law?
Before people had to get government marriage licenses, that's when. You see, they went to this thing called a Church. And that's where they were married, and that's where their marriage record was kept.
Then this new, stylish lefty trend showed up, where people had to register their vows before God with the government, and request permission for that government to review their relationship with God, and grant it or deny it.
Which brings up the question - have you received proper government approval for your relationship with God? Can you produce your religion license, or are you just one of those wild-eyed, unlicensed quacks?