Avoidance is not a good strategy of responding to conflict in a relationship: it will have the effect of weakening the relationship (if you keep on avoiding the person, your relationship might dissapear) and it will also potentially not solve the problems.
Avoidance might work in case of a conflict with a person with whom one does not have much in common, but not in a case of a relationship.
Answer: Sometimes immigrant parents decide not to teach their children a heritage language because they think it will hinder their children's chances for success in their new country. It is a parent's choice to decide what language they wish to raise their child in.
