Exactly.
The original post refers to Alex Campbell.

My introduction to Alex Campbell was when he came back from busking in the streets and in the cafes in Paris with New Yorker and whizz kid banjo player Joe Locker.They were a popular act at the Ballads & Blues and various other clubs. Joe went back to New York for a while and Alex appeared regularly as a solo act at the Ballads and Blues and other clubs around the country . I can verify that whenever he played the Ballads and Blues Club it was full. One evening he recited a very short poem the Glasgow kids used to recite which involved farting the audience thought it amusing and a couple of other singers told their farting jokes. The only guy that didn't find it amusing was seated in the Christine Keeler style. Rightly so I guess after all kid's street poems aren't folk are they.
OK so Alex had a fault or two like all of us human beings but he was an entertainer who made the music enjoyable and I am sure was responsible for bringing many people into the field of music that we call "folk". I would guess that even some people that are now primarily into the Child Ballads may have gotten there via Alex.