Never said they were wrong. After all how could I say their definition (of tradition") is wrong when they never gave it in the first place
Actually, on a quick read I did not see the word tradition, nor magisterium in the Lutheran article/ confession that Jon posted. However, it is quite succinct to include elements of what you consider to compromise these two words.
The Lutheran article states that beyond foundation of apostles etc, you have "all teachers and other writings, ancient and modern, and the “universal Christian faith and confession of the orthodox and true Church”, and it’s confession in council with its creeds, up to Athanasius Creed , all subjected to Scripture to show the “manner” of preserving apostolic doctrine. So I see church father writings, and writers up to his present day, councils, creeds, a universal body of Christian faith preserved in an by the church.
So it is there for one to see the elements of what can be considered be part of “tradition”.
So, “a rose is a rose is a rose”, or as a CC (Charlie Chaplin) movie put it, "The meaning of anything is merely other words for the same thing. " “A rose by any other name would smell as sweet” The elements, the essence, of “tradition” is there.
Not sure why the Lutheran article left the word “tradition” out. I can only surmise the reformers perceived abuse of the word by their CC. So why use a word that has become a source of division, a word that also signified something negative more often than not when used by Jesus. Only once does it seem to have a positive connotation when used by St. Paul in one of his epistles. Unfortunately, in my opinion, that misinterpeted verse has helped the CC to form the capital t in tradition, to which reformers reject.
So, you and others are correct in not seeing tradition explicitly worded or defined by the confession (Lutheran) posted. Yet P’s have also been correct when posting that SS, Bible Alone, does not negate the benefits of what they consider to be tradition of the church when subject to the norm of Writ, even as per their confession posted.