Maybe the artist is making under-appreciated contributions, or maybe their work is just not good. It's subjective, which means criticism is subjective too, but it seems a poor place to start with any UBI scheme executed in good faith.
I would think it would have more value as an experiment to start with some of the poorest people in a society and then measure their quality of life and economic contribution throughout and after the programme. If you could show a net-positive economic contribution during the programme, and a net-negative contribution before and after (as unlikely as I suspect that is to achieve) it would make it substantially easier to get popular support for UBI.