This certainly has become two different discussions. The folk revival over here was in the 60's. It's the folk survival, now.
Most of the discussion seems to be raging between different appreciations of current singers in England. I can't add anything to that. Certainly, as far as being traditional is concerned, they can't hold a candle to Lonnie Donegan. :-)

Hi, Art: Yes, I know you have always loved solo singers, and have always preferred to sing solo. That's a very strong preference for you. With rare acception, I've performed solo most of my life, too.
It just worked out that way, and I'm very happy with it because I can be more conversational between songs and strike up a different raport with the audience. But, I'd never confuse personal preference with the validity of solo singers versus groups. That's a discussion that is so non-sensical that it can't even withstand conversation. Traditional folk music embodies many types of songs, from ballads to string band jump tunes, prison work songs and dance music. I smile, reading this discussion because there have been times when someone who believes that only solo performers are real folk musicians, and then they begrudgingly (it seems) make an acception for dance bands. It still evades the clear tradition of singing groups and duos.

I love it all... Charlie Poole and Almeda Riddle. I bet if old Charlie and Almeda got together they'd just laugh at how serious (and foolish) the new generation is when they try to validate what is all folk music.

Jerry