"I'll take my time and answer the points you make "
Look forward to it with anticipation Steve.
".....fully appreciate the part played by the people of all walks of life who transmitted them and kept them alive for us."
As you have debunked the idea that they played any part in their making and thrown a king sized spanner in their part in remaking them, I find that difficult to accept; but let's see, shall we.
"like you, I have dedicated my life...."
It would help if you stopped patronising me by "removing my head from the sand" and taking off my "rose coloured spectacles" - I've spent as long as you at this work, if not longer, and the nature of the work we've done merits a degree of respect, even if we have spent thirty-odd years collecting only to get it hopelessly wrong - please stop insulting my intelligence and give me some facts to work with.
"....any favours by denying what is to me their obvious origins."   
If they are that obvious, it shouldn't be too difficult to put some factual meat on your extremely definitive and dogmatic skeletons - you've failed fairly miserably so far.
Jim Carroll