In my opinion traditional music is relevant as is song writing.
I recently played and sang in a folk club in England and sang mostly traditional songs which were comprehensible and entertaining to a room full of people interested enough to go to a Folk club and i got an encore.
Last OCTOBER, I was on at a festival with Nick Dow, we both sang traditional songs, we both sold lots of cd and both performances were well received . in fact i have never heard Nick Dow sing or perform better. So I m not sure what you are trying to say other, your post seems to be divisive.
Being inclusive amongst other things means including tradtional song and song writers, whatever their ethnicity.