you will still have difficulty with some, who if you look back, maintain that 'folk' is not a style!

But that depends on which meaning of 'folk' you are using. In one sense, it can only mean style. In the other sense it describes origin, and then it is correct to say that it is not a style. They are quite separate in their intent, and it should be obvious from the context which is meant. It should only be confusing if you refuse to recognise that the other meaning exists.

It is this refusal which is the root of the problem, and the reason why this thread has continued for as long as it has (and why there are countless similar ones). Neither is it one-sided - there are those who insist it can only mean style as well as those for whom it can only mean origin.