Alonzo, I understood your post to say:

Only if your definition of folk singer is someone who sings only songs they have written themselves and plays acoustic guitar.

That did not imply opinions about the content of the songs.

In fact, isn't it possible that some personal observations are also so universal as to be songs of a people, not just a particular person? And are you saying that depending on the content, some songwriters may be folksingers on some songs, but not on others?