Is it though? I definitely had teachers in middle/high school with oddball requirements like “only physical books more than 10 years old are valid sources”. Total nonsense but it does happen. College is a place where you are meant to have these bad assumptions challenged and corrected. Presumably after a response they’ll be better for it.
Same here. My teacher gave us the line “Dessert has two 's’es because it is Sweet and Sugary”.