Ugh. He sets off to worship a particular human “church” organization rather than God, parses words and is fast and loose with propositions, and calls himself a logician.
Not understanding (possibly deliberately) basic principles of the Protestant Reformation does not make it false. Of course, starting from the assumption of a perfect human “church” organization existing in the first place is just asking for trouble.
Just think what trouble is brewed, when you add the assumption of a shared "universal wisdom", one untouched by the Fall and Sin (and one that Protestants must therefore somehow be suppressing in themselves and others), to that cauldron.
Where does the author do that?