FirstHokage
11 years old are part of an anbu squad in konoha, what's his excuse? plus most characters in Naruto develop emotionally at an early age like Guy, Kakashi, Itachi, Minato, Tobirama, Hiruzen, Gara and many more considering the war-like conditions hovering over their head at any given time.
FirstHokage:he is just a 12 year old what do you expect him to do, he gradually became smarter and less cringe in the story đ