I agree that your research article was detailed and informative. Much of it I have read thru my grazing on the web about this very topic, but when I read it I felt it had a slant against the Irish in Kilts and "Irish tartans". This my have just been the mood I was in at the time, but I still feel that way.
Straight from one of the author's mouths: you are misinterpreting our purpose for writing the article. It was not ever meant to be a slant against the Irish, one way or the other. If anything, it is attempting to tell the real story of the adoption of Irish kilts and tartans, and not the myth.

And btw, many of our sources were not found on the Internet. A number of them are books and articles.

T.