Swahili is a word that can be used to refer to the language, food, and people. Just as English can be used in reference to people, or the language. I guess [the], and [language] are used in the translation for emphasis, and to avoid confusion.
Kupenda means TO LIKE as well as TO LOVE. DL doesn't accept to love in this context.
Is there really a significant difference in English between "I like a language" and "I love a language"? I ask because I'm not a native speaker of English.