>>54676182>>54676201the kana is でんせつポケモン which does mean legendary, but it means legendary with the context of "mythical", meaning it's stature is of a legend meaning "of old", not legendary. yellow, firered and leafgreen specifies that it's just something of "chinese legends" and "chinese mythology". it is not internally categorized as a legendary, and never has been. despite the pokemon category being named as such, pokemon categories are all over the place anyways. horsea is categorized as the dragon pokemon (before kingdra was a thing), cyndaquil is stated as a fire mouse pokemon despite being a hedgehog, blissey is named as a happiness pokemon despite causing the complete opposite so on, so forth.
>>54676197anime has never, and never will be canonical nor should it ever be regarded towards anything in the lore.