Agreed weelittle. The song moves on and the song moves forward. The people choose which ones to remember and if a song lasts more than two generations it's a folk song in my opinion no matter where it came from.
The nay sayers are actually a folk song preservation society, somewhat akin to the National Trust. I think they do valuable musical work by their preservation, but they do damage by their judgemental attitude.
All movements in the arts end up with this split between the conservatives and the progressives and Mudcat exhibits this in abundance.
My reading about these schisms in the past always show that the progressives win, and then a generation or two down the road they become the conservators.
No doubt in the future there will be those defending Beatles songs and preserving them in aspic!