“If someone wants to form a church that conforms to what they personally believe and conduct marriages, how does that affect anyone outside of whatever congregation they may have?”
If the government is not able to control marriage, then any church that advocates the homosexual agenda can and will conduct gay weddings and we will all have gay married couples in our communities.
But if they are only married in the eyes of their church, how will that make any difference vs. simply shacking up?