Sure.
I encourage my many, many nieces and nephews in the Philippines to learn English above all else. They are from the Visayan (Cebuano) region of the Philippines a place that has been colonized by the Spanish, the Americans, and some would say by the Tagalogs from Manila.
If my pack of brilliant nieces want to write novels in Cebuano after they finish graduate school, great. But I am pretty sure that it is a waste of time as far as any success in the world is concerned. Cebuano is far from dead, but give it a hundred years. The writing is on the wall.
A person has only one life to live, and they have to make their decisions about languages based on what is best for them. And of course nobody owes anything to some Bozo like me from another country.
My daughter and I actually had a pretty good discussion about this with a fifteen year old last time I was in Ireland. She HATED Irish language requirements in school. She wondered why I was interested in Irish, since I lived in "wonderful California". I can see her point. It was sort of, like, where does Irish lead? If it doesn't lead anywhere that anybody wants to go, why am I studying it. I see her point.
I don't think we disagree at all Cavesa, but so much is lost when a language dies. It is a shame. I bet somebody will feel sad at some point. To quote Joni Mitchell, "Don't it always seem to go, that you don't know what you've got 'til its gone." I can remember hearing poetic speech in Samoa that I bet will be lost by the next generation. Are sailing chants valuable for the modern person? Certianly not, use GPS, but they speak of another world, a wonderful, terrible world that is gone.
But native speakers shoudn't be preserved in some sort of park, or zoo, or something to make other people feel good.