Well Al, let me surprise you - most "folk clubs" have never said that an English folk club should hear only English folk songs. But they should know the difference, and hear enough, and those purveying a tradition should have a material or heritable connecion to it.

And as for universities "I just hope none of this pedanry isn't there" too. That's what universities are for, abstract detailed accurate understanding. THeyneed all the pedantry they can get, but if there is not enough room for all of it then some will have to be not there in which case our pious hopes (although you surprise me by putting it so) will be not met.