In other words...Rome continues to make up things and uses this "tradition" to justify their false teachings. Much of Roman catholic Mariology is based on this "expanding revelation".
Roman Catholicism resorts to this when it cannot identify in Scripture its false teachings.
Mormons and other cults also teach ongoing revelation.
Thus you see the constant appeal to Scripture as authority from Protestants and their rejection of Catholic for not heeding their appeals.
Scripture is appealed to as only it is the Word of God. Only it is inspired.
Rome cannot make that claim for its "Sacred Tradition".
And what justifies Protestant false teachings when they claim the Bible as final authority, then clearly cut and paste other parts of the Scripture to yield answers the Bible clearly does not give?
Furthermore, constant repetition of the Revisionist Word of God doctrine does not make it any less wrong, nor any less disprovable. Rome can, and does, make such a claim for Sacred Tradition, and would never be questioned on it save for Revisionists seeking justification for their Revisionism.