Not caught up, but did Tyler vandalize anyone else's property or were the Gallaghers his target? I'm wondering if Tyler was jealous of Alanna. Alanna had 3 parents, two of which being dads, while Tyler lived 2 doors away with one parent and no dad.
I think he terrorized the whole neighborhood, haven't seen any more reports of him vandalizing, but I wouldn't doubt it. Jealousy...hummm....more likely opportunity. Correct on his living with one parent and no dad.