Walter had opinions, so do I, so do you, but he chose to sing a song because he liked it, AND because his audience expected it, for example he might have liked[possibly] the white cliffs of dover, but he knew that was not what traditional folk song collectors were after, he also knew that was not what was expected of him in a folk club, Harry Cox was the same.
NOW a traditonal singer like charlie stringer would sing the highwayman outwitted and five minutes later, carolina moon, because he just liked singing both songs.