I think it has something to do with Akito being “god.” Through the curse, the animal spirits are bound to him and can’t seem to disobey. Even some of the other, more well adjusted kids that have normal loving families never blame Akito for stuff that is clearly his fault, like beating up Kisa or blinding Hatori. I’m curious if the past heads of the family were this abusive, or if it’s just because of Akito’s own crappy childhood.
The Sohma clan needs to have some psychologists in the family. They’d be way more useful then a medical doctor.