J. K. Rowling

If sex isn’t real, there’s no same-sex attraction. If sex isn’t real, the lived reality of women globally is erased. I know and love trans people, but erasing the concept of sex removes the ability of many to meaningfully discuss their lives. It isn’t hate to speak the truth.

— J.K. Rowling (@jk_rowling) June 6, 2020

For more reading on why this is harmful - https://www.npr.org/2020/06/10/873472683/harry-potters-magic-fades-when-his-creator-tweets