Very interesting question.
And I've had similar ones but for other reasons.

From what I can tell from my own peers at least, some of the percieved 'rigidity' in strictly traditional camps can be a turn-off to those of my own and younger generations. No-one I know beneath retirement age, is interested in trad songs. Of course I cannot know if I'm alone in that. Yet world or fusion folk is booming with the 'young people', my musician friends included.

A degree of this seeming rigidity reminds me of ex-pats who fiercely defend their origonal culture by strictly living according to the memories that they have 'snapshot-like' retained from the day they left their native lands - while at the very same time, their origonal culture in their native lands, simply keeps moving on and evolving, thereby leaving the ex-pats looking like strange, comical echoes from the long dead past.

Not attempting to offend a soul here. Merely sharing an observation. Which may or may not be utterly groundless and isolated to me...