I've formed the impression that to some Catholics, traditionalism is the Church's most urgent and dangerous threat today, perhaps the only threat to the Church. Reading their persistent polemics, I can only refer such polemicists to the counsel of St. Paul the Apostle:
De cetero, fratres,
Quaecumque sunt vera,
Quaecumque bonae famae,
Si qua virtus, si qua laus,
Quae et didicistis et accepistis et audistis et vidistis in me,
Haec agite, et Deus pacis erit vobiscum.