Dick,
I was merely pointing out that many tunes that now exist in many traditions can be traced to known composers or have been adopted from other ethnic musics and changed to fit different functions - and that the majority of modern folk ethnomusicologists consider that process and adaptation are as worthy of study as origin. You obviously think differently and that is fine - except that a close observation of the way that traditional musicians transmute written pieces is an observable fact and not an opinion.
No more from me on this.