If Folk Clubs are a disservice to folk music what does that make singarounds in pubs?

I was at school and took part in the Singing Together sessions on Wednesday mornings. I hold these responsible for my interest in folk music and led to my involvement with a morris side.One song which used to be sung in my last year of juniors was not folk based at all. It was called Calling all Zartians and was about man invading outer space. I never understood how this perversion fitted in with Twankydillo,Ash Grove and Sally Brown and should be rated as a disservice to folk.
Yours still confused
Fran