“This is a denomination gone so badly awry that it can no longer be considered Christian.”
By this logic John the Baptist wouldn’t have been a Jew.
Think about it. The Church doesn’t belong to the Methodists. That was never the idea.
Your logic escapes me. We are talking about a corporate institution, not the body of Christ. Paul was a Jew but was he a Pharisee or a member of the Sanhedrin as a follower of Christ? Clearly not. Judaism, like Christianity, is a religious movement, not an institution.