In the U.S. kids are popping up all over the place. Many play bluegrass, blues and old-time.
They are not all trying to be pop stars or the next Dylan. Where I live, near Atlanta, there are some wonderful young fiddlers. Just because it's not on the radio much doesn't mean that
it's not happening. It is!

The future looks brighter and brighter as more history and materials become available.
When I was younger you really had to search for authentic folk music. Now, a lot of what we tried to find is readily available. YouTube is amazing.

I don't really know the Brit folkmusic scene but here in the States you can find it without the radio.

I need to remind the posters here that folkmusic and songs are not confined to the U.S.
or Great Britain. Sweden is finding a renaissance. Africa is. Slavic countries.

Folk music continues in spite of it's Mark Twain demise. (Greatly exaggerated).