On 3 December 2019, Seibt spoke as an invited guest at the Madrid "Climate Reality Forum", a forum organized to rebut the United Nations' climate change warnings, while Greta Thunberg spoke at the 2019 United Nations Climate Change Conference (COP25) several miles away. In 2019, Germany's AfD had embraced climate change denial as part of their political campaign in Europe, and were therefore, also aligned with EIKE. She was the only woman invited to speak at an event that is "traditionally dominated by older men".