I don’t understand your linkage here. I was writing about Luther, not the Early Church Fathers. Luther’s errors, following from and resulting in schism, were plain.
And the ECF’s are by no means infallible. You have to apply Vincent of Lerin’s “Everywhere, everyone, at all times...” Allowing for the legitimate rhetorical hyperbole here, of course.
I like your reference to the Word, though. We are not, as the Muslims say, People of the Book. We are People of the Word.
The ECFs are used and dismissed in the same manner.
The NT is the only set of texts we agree upon.