I think your wrong. You can become addicted to anything and it could potentially become harmful. The way this man is explaining it seems like he not only isn't enjoying as much time he's is spending but also he's probably spending too much time as it is. Now sure an addiction could be harmless I have a nice balance of responsibilities and playtime but sometimes I feel like I do go a bit overboard playing. And if he is actually contemplating retiring from this game and he was so happy for his buddy leaving then perhaps it was harming him in a way that maybe we can't actually measure or see like a drug user would but it's quite obvious he does have a problem using destiny.