I was listening in to a playaround at EAMT's Stowmarket festival and some of what was going on wasn't conservative in the least - nor was it accidental. We've long had the odd dabble with iconoclasm - the diminished chord at the end of "Give me your hand", for example - but this spent about five minutes way off in the land of Karlheinz's 57 varieties before resolving itself.
What we might do, perhaps, is benefit from the music industry's grip and say anything which isn't commercial has to be folk.

That being said, watching Sky News broadcasting a bunch of Ukrainian women singing folkssongs while making ghillie suits for their snipers put an entirely new complexion on waulking.