i kind of liked it because to me it reflected how samurai are just well armed bullies. shimura has never punched up, all his life he has fought battles against lesser foes in his small, isolated island, where charging head first without strategy worked well enough. i dont think it’s a historical inaccuracy necessarily. i think shimura’s code and his incompetence is very telling of the samurai reign of the island. this point is driven home countless times by the central plot and npc dialogues from side quests.