LOL As I have already said I don't know , you tell me.

>>You've named some recently written songs that you think are folksongs<<
They are songs that seem to be accepted in the folk scenes.

>>So, name some recently written songs that you think aren't folksongs, and let's see what sort of pattern develops<<
Well teher starts the problem.
If for example we take Elton John who is not classed as a folk singer.

Candle in the wind which in some ways would be classed as pop. However when he used that song in relation to Princess Diana to some extent it became a song of the people and if you went to a concert of his, everybody would be singing it.

Likewise, I have seen Queen live 2 times who are definately not folk, but to be there live listening to everybody singing "We are the champions" is something to be seen. We are the champions in my opinion would not be classed as a folk song.