Yes, it does make sense.
Anyway, this discussion have kind of derailed from the main subject: the concept of Rahi in Bionicle and, as an extension, in Matoran society.
Greg’s response was vague but, at the same time, a hint and food for thought, so as the result it’s up for interpretation, and, in my opinion, supports my headcanon that it’s everyone but the Matoran and related subspecies, but most commonly - the wildlife because Metru Nui was a closeted society that didn’t see many intelligent outsiders, if at all. At least, prior to the Dark Hunter war?