Computers have been anthropomorphized for a very long time. AI is also a kind of anthropomorphism for the use of the word "intelligence". If we wanted to move away from that, perhaps we could say something like "maliciously developed statistical language model", or "malicious statistical language model" to replace rogue. In this case it was merely a "statistical language model", but if the author sees a need to append an adjective, then I think sloppy is more accurate than rogue.