It doesn't surprise me that out of all of the major Christian religions, Catholics would publicize this a bit more, given that they stress holy tradition over holy scripture anyway.
Not quite true, ATJ. Scripture is written tradition. It is neither above or below the spoken tradition. It is a part of it and neither contradict. I believe this statement is accurate for the Orthodox Churches as well, and even for the great majority of Judaism. Sola Scriptura is a Reformation era innovation.