If that is what they do, then they are vey wrong.
MHGinTN -- it would be good if you would argue based on reality not some fantasies about what Catholics believe in -- it's like someone arguing with you "why do you beat your wife" -- equally based on non-fact
Jesus quoted from the Deuterocanon: Deuterocanonical Books in the New Testament
Also, the early Christians used the Septuagint, not the Masoretic version, as it didn't exist yet.
FYI, the Books of Tobit and Sirach, along with Baruch chapter 6 were found among the Dead Sea Scrolls. All are deuterocanonical.