That is a great point. Machine consumes energy of adding goblins in every response. The machine consumes energy on removing goblins from every response. That is a great attack vector. If (wild imagination ensues) an adversary can do that x100 (goblins, potatoes, dragons, Lightning McQueen, etc.) they can render the machine useless/uneconomical from the standpoint of energy consumption.

In Terminator 7, everyone will carry goblin plush toys to defend themselves against the machines.

I mean probably not or they wouldn’t have shipped it, right?

Greater context size means more computational resources means more energy. Dedicating a portion of the context to telling the LLM not to refer to goblins then has a non-zero energy cost every time you prompt the model.