According to historical Anglican tradition, the Episcopal Church, like America itself, welcomes diverse points of view within a broader set of canons. The problem for Mr. McManus’ orthodox is that they constitute a minority that is frustrated they can’t impose one viewpoint upon the entire church.
Their strategy is to claim a majority within an international Anglican Communion, but that association carries no binding authority over the Episcopal Church in America.
If individuals feel they want to attend a church with a narrower theological doctrine, they are free to exercise that choice. There are no provisions, however, for whole entities like dioceses or parishes to leave. There isn’t a diocese or parish in the U.S. where everyone wants to secede.
What about freedom of choice for those who want to stay? That’s the focus of the lawsuits.