In my view any Pope that contradicts the teachings of Christ is in error.
The Mission of the Catholic Church is to preserve the teachings of Jesus Christ not improvise as it goes along. No Pope , no Cardinal has the authority to assume this privilege which belongs to Christ alone.
Christ didnt teach erroneously or incompletely, He most certainly doesnt need anyone to come along and alter or change... let alone correct His Word
The Catholic Church is not here to please the world, or adapt to the world , or submit to the world, The Church is here to be faithful to Jesus and His Word till He returns....no matter what the world and *those of the world* want
Anyone who doesnt is not true and faithful to Jesus Christ in my opinion