I agree with Master Southwick. I don't think he is saying there are no traditions, I think he is referring more to practitioners who try to divided Taekwondo by stating that what they do is so-called traditional Taekwondo, vs what others do.
Taekwondo has been in a constant state of change from the date our seniors began using that name to this very day. I do not think Taekwondo training methods have remained "frozen" long enough to even be considered "traditional" at any point in time. If so, what date? 1944, 1953, 1959, 1961, 1965, 1968, 1972, 1973, 1980, 1988, 1998, 2009, now? When?
That said, I believe we do have some strong traditions, and some general traditions. Strong traditions would be things like; constant improvement and change, reverence for seniors, strengthen character, self discovery, etc. General traditions would be stuff like; the wearing of a training uniform and belt, we kick-punch-and move in defensive and offensive patterns, we have forms-sparring-breaking, we have competitions, we use some Korean terms, etc.