You may be interested in reading an article by Rabbi Bender in the Jewish Observer from over 30 years ago. “Mamme Loshon Is Precious, But Is It Talking To Us?” agudathisrael.org/the-jewish-observer-vol-21-no-5-summer-1988tammuz-av-5748
Rabbi (Josh) Silvermintz wrote a response pointing out the ties between the post war generation and Europe and the role of Yiddish. Alas I cannot find the reference.