All that's true too. But a legal boundary of culpability has to be drawn somewhere. This seems to be where it is.

I took the question as should the same mechanics that exist for physical abuse (Lorena Bobbitt comes to mind) exist for emotional abuse? Or financial abuse?

Short answer, yes. Abuse is abuse.

But if you beat someone so bad you put them in the hospital, murder them, or mutilate them there is going to have to be an accounting.

I also took the question as asking about normal, adult, consensual relationships. All things being equal. Childhood abuse is not equal and you're right in that parental wounds.can mess kids up.

That's where, I'm a perfect world, counseling would be prioritized so that wounding parents don't exist or in much fewer number and kids would come into adulthood with access to skillsets they might have missed in childhood.

But that's just one of my Utopian fantasy versions.