“Without Petrine authority...”
Well, with “Petrine authority”, you are misled into believing falsehoods that you aren’t allowed to question. No thanks, I could become a Mormon or Jehovah’s Witness if I wanted that.
Well, at least you admit, you, and anybody else like David Koresh or Jim Jones, or the Mormons can get to pick and choose and follow what “you” think is God’s Word. If Petrine authority was the very basis of authenticity of text in selecting what writings were part or not a part of the canonical texts, this infallible authority did not suddenly evaporate with the Reformation. Christ spoke one truth, not many truths, and established one Church without error until the end of time to declare His word.