The problem is, in my opinion, more that Star Trek doesn't really have a word that can be used to encompass all sapient lifeforms. Even calling humanoids "humanoids" is problematic in this context, since it assumes human as the basis/standard
my personal head canon on this is that the Universal Translator is being equally provincial with every species, so that “humanoid” translates to “Klingon shaped” or “Ferengi-esque” to the ears of those species.