Snail,
'The folk process' as I understand it, is used to describe how songs evolved in the tradition.
Sam Larner, Harry Cox, Walter Pardon et al were part of that tradition, today's singers are not. They (some of them) are a part of a revival of those songs and, as far as I'm concerned, can no more be described as traditional singers, than a modern singer of Elizabethan madrigals can be described as 'Elizabethan'.
Jim Carroll