Hello, everyone. After having read your comments and even though I feel that I still don't really understand what " folk metal " is all about, I'd like to add my "grain de sel" (grain of salt) after all. . .
It seems to me that folk---or rather traditional---music is something that resists both the ravages of time and creative innovations quite well. While I may not choose to follow a particular style of "folk" after having given it a fair listen, I wouldn't try to persuade someone not to play and/or listen to it themselves. On the other hand, I don't believe that traditional music(s) necessarily need to be made "accessible" in the sense of having all kinds of, uh. . . let's say modern effects added to be appreciated. Having said that, I find Arty McGlynn playing sets of reels on his Telecaster quite breathtaking. Is that folk metal too?
My own first encounter with traditional music was hearing someone play an Appalachian dulcimer and, over thirty years later, I'm still listening to traditional music. I don't think that a few " innovations " from time to time are going to destroy the acoustic side of things.