You should care. Because there are sources claiming 30% of Chile is White. If there are different informations about a subject, then one of them must be wrong. And if there are no census in Chile, then these racial figures came from nowhere. And also, everybody who went to Chile know that no way 50% of the population is White. Not even in Brazil the figure is so high, and Brazil has many more whites than Chile, because the European immigration to Chile was minimal, when compared to Brazil.

We cannot trust any source. We have to be carefull. If Chile has no census, then is has no racial figures. That's the point. The source must be reliable to be acceptable.