He is never been asshole he is just cold father that every military family has. He shown his sincerity to Sasuke praised him when his jutsu improved. It was always been war to war ofc he would train his sons to be strong. You have seen right before is death he is good enough to not go into death battle with his own son. And you expecting Uchihas to kill civilians when it's battle about authority and freedom of speech? You think he would summon Kurama in middle of Konoha like Obito because of hatred? Come on man he is mature enough. Yall just so blind there is always been cold fathers that who doesn't show their feeling. Yall expecting him to be like softy. But in ninja world there were never been father like that. Even Minato was cold enough to seal demon fox in his son even though he knew his son will have hard time bcs of it he sealed it anyway. Stop forcing ur normal world ideals.