I actually don't get you... Elaborate, please? It shuts out Japanese first-years, or foreign Japanese-language-class first-years?What often happens is someone will try to use simple words just to be nice, but what you get taught from very basic materials in Japanese is polite style.
OT, but actually, I just remembered an anecdote from my father’s childhood (c. 1950, U.S. Army Garrison Heidelberg). The Coca-Cola man (kind of like a milkman, except for Coke products) had this slogan he thought was brilliant for the introduction of Fanta outside Germany: “Once you try it, you’ll never miss it!” (Grandma didn’t have the heart to tell him what was wrong with this.)