What is the youngest brother’s objection to his early death?

Salvation of Children: Aṣlaḥ, Recompense and Theological Differences

• I obeyed as an adult, so why did I not receive reward?
• How was it established that I would certainly disbelieve as an adult?
• With more life, I might have obeyed and received reward like my eldest brother
• Why should the other brother’s sins be imputed to me as a child?