Tradition and Scripture are both important for doctrine. In scripture, so are history and archeology and in morals so are the natural and social sciences. Nothing is irrelevant. Indulgences are based on St. Anselm’s worldview of salvation. There are others. Purgatory is valid, not for burning off sins but to gain a forgiving spirit and end anger, for an angry person, even the most scrupulous Trad, cannot enter Heaven. Indeed, as angry Catholic Trump voters start dying off, Purgatory will need a new wing. The Marriage decrees are valid, however they are still wrong and unscriptural if you accept that the debate between Hillel and Shammai must be considered. Francis is tempering the severity of Trent, but more needs to be done for charity and sanity. The Calender is a temporal question and it could yet change again civillly without the Church having a say.