Darts player Samantha Lewis "has been questioning her future within the game".
https://www.bbc.co.uk/news/articles/c10l58zd059o
Nobody should be subject to abuse or discrimination. But equally, nobody has actually been "banned" or "excluded".
Thank you to England darts for clearly stating that "including 'non-birth-gender females' in women's competitions could 'ultimately result in the demise of our women’s sport'."