Languages don't "die", they are smothered by a society hostile to the community that speaks them. That may be outright genocide (as in the article), or it may be something as simple as forcing children to go to attend school in a language foreign to them, that offers zero recognition of their mother tongue. The kids may have to learn the content in a foreign language, and they are denied even so much as a hour-a-week class on the literature of their native language.

A system that is intent on eradicating the cultural heritage of a people is not trying simply to do only what is beneficial for the kids. =/