No, you're wrong. When studying Vietnamese history in classes, no one knew about it (including me). Students thought Vietnamese language already used quoc ngu since the very start, no teacher had taught students that Vietnamese language used the ugly Han tu first. I just suddenly discovered this by myself. No teachers taught, also the Vietnamese history books in classes didn't had any Chinese characters but Vietnamese. That means Vietnamese people did't care about Han tu or chu nom anymore. We must eliminate them all.