Ken4155 - "She is a brilliant and innovative violinist who has earned millions of pounds and world wide acclaim..."
Not really.
In much the same vein as people like Paul Potts, or the Strictly audience, the vast majority of the population lack the knowledge to make an informed decision about the technical ability of such artists and dancers.
Anyone who knows anything about opera singers will advise you that Paul Potts is not actually that technically able a singer. It matters not at all - his audience love him, and they know no better, so no problem.
The same applies to Ms. Mae. She is a technically good player, but nothinf really special, except the image of the electric violin, and the floaty hair and dresses and her obvious good looks - all of which combine to provide a winning spectacle, but it does lack any real serious skill and innovation.