"I sing traditional material because I like it". There's your quote. 'Nuff said.

No, Richard, not enough said. Here's my quote (apologies to everyone else for this second repetition):

I sing traditional material because I like it, just like WAV. I get the material I sing from books and records and from the Net, just like WAV. Neither of us is doing anything to perpetuate "the tradition from which [we] come", because at this point in history that tradition doesn't actually exist.

We could have a discussion about just how much I "like" traditional material - I can change it to "love" if you like - but that's a separate issue. My point is that I wasn't born or raised in any musical tradition. If you're one of those people whose inherited culture includes traditional songs and tunes, that's great: I'm pleased to make your acquaintance and we must have a chat about song variants some time. But I know I'm not one of those people, I'm pretty sure WAV isn't and I suspect most people reading this aren't either.

We're not bearers of the tradition in any meaningful sense. We've ended up listening to and performing traditional material for a whole variety of reasons, but surely the most important is that we like the music. Against that background, to draw a line that excludes non-English material and then claim that everything inside the line is "English culture", which we English people should preserve, is a bit pathetic.