“Thus they can both wrest certain proof out of Scripture for RC traditions that are not seen officially done, while what constitutes official and even infallible teaching can differ among RCs.”
You have fallen into Satan’s trap. He has muddied the waters sufficiently to lead you, and presumably many others, into misunderstanding those things.
The Lord quoted Scripture to refute the devil, and the latter was silenced. When you have an argument rather than ad hominem, and want to answer my questions, then get back to me.