I agree that the word "mod" should have been used, since "hack" makes us sound like we were trying to steal credit card numbers or something. It's probably my bad for not advising the core CE team more on the type of language to use. You see, the creators of CE were focused solely on this effort for years, and weren't quite steeped in the wider game modding culture; I got the feeling that they wanted to pour all their effort into one last project before moving on with their lives, whereas a lot of us have dreams of going further and modding other games.
However, I gave the phrase "ROM Hack" the benefit of the doubt since I also visit Romhacking.net frequently, and they don't seem to be attracting any unwanted attention despite the fact that they apply the same terminology to patching that we did. I'm rather sad that the admin of Romhacking.net is accusing the C&D of being fake. While badly worded for a C&D compared to what Chrono Trigger: Resurrection received years ago, it is indeed legitimate -- an admin did get through to SE legal to confirm, as explained over at RH.net -- and denying that legitimacy encourages the very confidence with which the Chrono Compendium forged ahead with its own projects.