Ignoring 1,000+ years of Church history is not a small iota.
Have you read his, or Fr. Berry's, books? I am genuinely curious since you wouldn't even entertain MHFM's speculation surrounding JPII in the other thread (to clarify, I am not saying I believe what they say about him).
"Ignoring" is not the proper word. He chose not to go with the purely spiritual interpretation that is most prevalent during that period. He still uses the Fathers. But, I don't need to justify it, as it's already been given
imprimatur and
nihil obstat prior to V2. And we can split hairs about the individual orthodoxy of Fr. Kramer, Bp. Mueller, or Fr. Considine; but its still the approval of the Church versus whatever you've personally stitched together from the Fathers and Doctors of the Church.