I know that timelinewise Garrosh is technically older than Thrall , but in all canon lore I ' ve read everyone refers to him as if he ' s younger . They talk about how young he is , while no one mentions Thrall being young or younger . So I think Blizz sort of overlooked the timeline technicalities and wrote Garrosh as younger , with Thrall as a father figure to him . And yes , Garrosh is responsible for his own actions and no one really , no one is saying he isn ' t . But people are created and shaped by their experiences , and I think the abandonment he felt from Thrall and the fear and probably inadequacy the felt from being thrust into such a position with little guidance made him the way he turned out . I especially think it ' s shitty that Thrall framed his leaving as brb just watch the Horde real quick but then ends up being gone for years , having a wife and kids . I would assume Garrosh felt very pushed aside and sort of replaced .