I agree that very few Presbyterians in the Pews support the leaders wierdness and radical views. That being said these same Pewsitters send money to these whacko leaders in the denominational bureaucracy.
It is one thing to verbally complain about the leadership in the PCUSA. It is quite another for churches to stop the money flow to the denominational bureaucrats.
Our congrgation is a "Confessing Church" but in my case I don't give as much to the local church to send on, pending things shaping up. I still give unselfishly but I have found other places to do the Lord's work.