Pope Paul and Cardinal Wojtyla were the two men most responsible for preserving tradition in Humanae Vitae, despite the "zeitgeist" found even among the men appointed to advise them on the matter. Therefore your statement that they despised tradition and did all they could to undermine it is false, hollow, mistaken, and wrong. If Paul had granted Catholics permission to contracept, then you might be correct that they did everything they could have to undermine traditionalism, but since he didn't grant permission tto Catholics to contracept, then he didn't do everything he could have to undermine the Church.
If Paul had granted Catholics permission to contracept, then you might be correct that they did everything they could have to undermine traditionalism, but since he didn't grant permission tto Catholics to contracept, then he didn't do everything he could have to undermine the Church.
However, if you want to place blame on the post-conciliar popes for the way people disobey or ignore the Church's teachings, then you would be correct, for it is Humanae Vitae that is most responsible, and therefore the two men responsible for it.