Despite Kate's announcement that she has cancer, conspiracy theories about the princess's health continue. Some pioneers of the X platforms - formerly Twitter - and TikTok claimed that the video message published by Kate was created using deep fake technology supported by artificial intelligence.

Misinformation also spread about cancer itself, with publications claiming that the disease is not fatal, likening chemotherapy to "poison" The spread of conspiracy theories highlights the growth of misinformation, a trend growing due to the public's mistrust of institutions and traditional media.