It helps reporting. Right now journalists are all over the place, because "rouge agents" sounds exciting and dangerous. Wording it as "OpenAI failed to take proper safety precaution before launching it's coding agents" makes it sound boring and mostly a legal matter for the courts.

In terms of the debate on e.g. HN, I'm with you, it is trying to redefine a term we already have a shared understanding of, to some degree. For the general public, it's a matter of how AI is perceived and what the extend of it's capabilities are. The AI companies have an interest in using the word rouge, because it makes investors all excited, were as failure to establish safety guidelines is a risk.