I mean, mailing anthrax is a biological weapon. That was the second biggest news story in September 2001. It doesn’t have to be a state sponsored pice of high tech ($), it could be as simple as catapulting plague ridden bodies into a 14th century castle to break the Seige of Kaffa…. Smallpox blankets in 1763, Rajneeshee Cult Attack in 1984, Ricin letters in 2004.
Why are humans so surprised that LLM’s can instantly access the same information I can?