When we encounter the one scripture passage that refers to Mary being blessed we certainly discuss it. But since it is only one passage we don't see any imperative to emphasize it.
There's so many thousands of verses in the Bible which deal with various people, history and doctrines; these are what we emphasize...not just one passage.
41 When Elizabeth heard Marys greeting, the infant leaped in her womb, and Elizabeth, filled with the holy Spirit, 42 cried out in a loud voice and said, Most blessed are you among women, and blessed is the fruit of your womb. --Luke 1:41,42Here are a couple more! The Rosary was created [in part] through these Bible verses, and once recited, one gets to know Mary very well, and it is easily figured out that her job is to bring souls to her Son, Jesus.
Hail, favored one! The Lord is with you. --Luke 1:28