As long as the song in question is clearly identified in the header, I see no problem with it; folks that aren't interested cn just skip it.

As far as finding its way into the DT, I'll worry about that. My tendencies are, generally to be overly inclusive, rather than overly exclusive. Which means that the DT will likely have songs that SOMEONE won't consider to be folksongs. Hell, there's a ton of them in there that I don't consider worth singing, and more that I probably will never think of as folksongs.

So what?