"No auditions, you just have to want to do it. As far as I am concerned, that is what folk music means"
In a nutshell!
Good/Bad are subjective terms, and I hate applying them to someone's music. Whatever it is, it is their expression of their own soul.
'Good' and 'bad' are not the criteria that should be used when 'judging' it.
Technical excellence, or otherwise is a different fettle of kish, altogether... but that is only really relevant if you're paying them money to be 'good'
'Floor singing' is many peoples' entry into the 'performing in public' area, and it frightens the s**t out of many people at the start.
Let them in....