When talked about in a broad sense, languages use the definite article.
You will hear this very often in Hiberno-English. It's not just confined to languages, either.
No, it shouldn't, because the names of languages don't take a definite article in English.
In English, it is necessary to differentiate between "the Irish" (the people) and "Irish" (the Irish language), but in Irish, they are totally different words.