They’ve kind of “finessed” the issue by saying that the person having taken such a position is “self excommunicated.”
And so he might be in some theoretical sense. But what happened to the Lord’s biblically recorded admonition to the church to treat someone who refuses a rebuke before the church to be treated like a foreigner and a tax collector?
Organized religion is not something I can get into. If Martin Luther was alive today he’d have to start all over.