Rowling publicly supported Maya Forstater, a researcher who lost her job after tweeting that people cannot change their biological sex. This marked the beginning of widespread criticism and accusations of transphobia.

Rowling criticized an article that used the phrase 'people who menstruate,' questioning why the term 'women' was not used. This tweet sparked intense backlash and accusations of denying transgender identities.

Rowling published a lengthy essay on her website, explaining her concerns about the potential impact of transgender activism on women's rights and safety. This essay further intensified the controversy and led to widespread condemnation.

Rowling has continued to engage in discussions about gender identity and transgender rights on social media and through other platforms, facing ongoing criticism and accusations of transphobia. Many Harry Potter actors and fans have publicly distanced themselves from her views.