It is not down to one person to decide on what and what is not folk music beyond their own ability to discern. performers and presenters have some respibility to ensure that various aspects are availble to have an informed opinion. There is a wealth of published information, bulliting board, newsgroups, etc, from which one can draw futher information.

however, I don't see it appropriate to be dismissive about the revival which popularised folk.

talking of 'process' that raises the question of who decides that s song has gone through sufficient process. Also folk 'process' goes another way where the nuances of collected material have been lost through lack of care and attention towards the songs, and the ease of disseminating material in recorded form sometimes hastens this dilution.