actually, the article states “Catholics, Lutherans, and others continued to believe that infants who weren’t baptized would be condemned to hell.”
I can only speak for Lutheranism as expressed in the Lutheran Confessions. It is not the lack of baptism that damns but the contempt for baptism. God works through baptism, but He is not limited to baptism. What God does with children or adults that die without the benefits of baptism is up to God.