The Importance of Language
Language is more than words. It is more than the ability to remember and reproduce the sound patterns of memorized words and phrases. Language represents thinking, and it is through language that our thinking is refined and elevated.
Concepts are formed via language, and we can think about concepts in flexible novel ways in order to think flexibly and learn. The repeating of borrowed phrases and sentences (parroting) is just the doing of a verbal act. Words produced are not representative of thinking unless what is said is authentically owned by the speaker, not simply borrowed from another (a movie, a trained phrase, a YouTube video).