Actually, I thought it was a clever turn of your phrase..
“What similar false authority could you point to in the truly protestant denominations? (we must exclude the Episcopals here”
Uhmm,..let’s see...how about the “every man his own authority”
school of Protestant thought..will that work for you???
But that comes out of your imagination. The scriptures are the authority. Man is fallible. (take the current Pastoral sexual misbehavior scandals running through the entire church)