Discussions of trad vs. (whatever you label whatever is not trad) always sort of interest me. I can sort of see both sides.
I did a concert with a couple friends last summer, mostly Scottish stuff, quite a bit of Irish, and a bit of “Celtic flavored” bluegrassy/folksy/singer-songwriter type stuff. Whistle, pipes, bodhran, guitars, mando, a touch of banjo here and there.
During a break after a slow air/dance tune set, an older gent known as a local history buff came up and gave me a completely unexpected compliment: “That’s the first authentic cowboy music I’ve ever heard performed around here.” His point was that contrary to popular belief, cowboys and other Western pioneers–at least the ones on the high plains-Oregon Trail-cattle drive scene–did not settle the Rocky Mountain West playing guitars. They were too cumbersome to carry on horseback.
In his words, “this area of the west was settled with concertinas, whistles, mandolins, and fiddles.” He said a lot of the pioneers were first or second generation immigrants, and they loved the old tunes. If you read any of John and Allan Lomax’s excellent books, they make the same point.
Long story to make a short point. IMO, there’s a difference between being a trad musician and being a reenactor. Reenactors recreate a specific time period, with only instruments, tunes, etc. used at that time and place. Fascinating and lots of fun when done acurately.
But traditions aren’t always like that. Traditions change with time. They evolve as people move around and mix. Things get added and taken away. That’s the way it should be. Otherwise, we’d have no fiddles or whistles (among other things) in IrTrad. And were would that leave us? It’s too horrifying to contemplate.
Confession time, before I go: I dearly hope to be part of a commercially successful band someday, and have detractors who debate whether I am trad or not. Also, I enjoy both Leahy and the Wicked Tinkers. But perhaps that’s for another thread. 
Tom