I suspect that the reason that we do not apparently have many people of colour on this forum, either above or below the line, is because not very many people of colour are interested in 'folk music', at least in the Anglo- and African-American-based 'folk music' the discussion of which dominates the musical part of the forum. A person who is interested in some form of African folk music, as an example, may well stumble onto this forum, take a quick glance through the thread titles, and then move on to another forum in which there may be more people who share that interest.

Bear in mind that it is a minority of white people who have any real interest in 'folk music', and of them, a tiny minority who hang around here ...