They are not an option because of the leaked poster fiasco after which they pulled out. Not long ago the festival posted IG stories that went "in a stroke of luck you find out about the new confirmations before anyone else, would you tell". In light of why they pulled out in the first place it's not as much teasing them (you're right), as it is marketing de mierda.
Oh yes I see, thanks. Their wording is confusing though.