Ehhhhhhhhhh I hate this undeserved redemption.
His plan to steal+sell the magic crystals was stupid from the start since it was super easy to trace who did it, being a new and unique product (for now).
He cares about his children? Then he just seems even stupider for using this risky plan in the first place. Worst case scenario, his whole family is executed for treason or something.
Trust? Piggy started by stealing the crystals from villages that sorely needed them. Every death or property destroyed that could've been prevented by the crystals is all on him. The author should've really brought this up.