AF - it matters because of the intent.
An abuser is, clearly, a dick who intends to mistreat another person, usually for control.
Someone who stonewalls, ignores, dismisses, ridicules, or neglects because of the way their brain is wired does not have the intention to control or mistreat. Indeed, that person is horrified at the emotional consequences the NT partner suffers, once they eventually realise that their lack of emotional support is hurting their partner - horrified, sorrowful, guilty, and utterly mystified.
It's a bit like speaking different languages. It's not something that affects EVERY area of our relationship, he is a Good Man and we mostly tick along fine. But, emotionally, I'm speaking Italian and he's speaking, well, possibly Klingon.
He just doesn't "get" NEEDING physical comfort or emotional expression.
For instance: our 8 week old son was very unwell with a bug, hospitalised for 4 nights. DH, the baby's daddy, didn't visit. He didn't even phone me to see how things were. Not once. The baby was on tube feeding, oxygen mask, was heading to HDU - nothing.
I found this lack of support, well, quite challenging to accept. "in sickness and in health" and all that.
So, inevitably, I lost my temper and turned it into a massive fight - because, clearly, the fucker didn't care whether the baby lived or died, and even less about how I was coping with kid in hospital and toddler at home.
he replied, not defensively, just with confusion "well, what's the point in visiting? He doesn't even know who I am yet, he's only tiny. Besides, he's unconscious. The nurses are looking after him, and if there's a real problem, you'll phone me"
His definition of "a real problem" in any health situation is impending death.
He could only think in practical terms - and, acutally, he was so overwhelmed by his emotional reaction of having a frighteningly ill baby that he was rendered unable to do anything.
Which is, you know a bit shit for me, who expected some hand holding from him.
But, it doesn't mean that he's a monster who'd neglect his family - even though his actions were neglectful.
He didn't know what to do, so, he did what he DID know - went to work and earned the money so the bills were paid. Practical, but, not at all helpful for me, a neglected and indescribably hurt and lonely life partner.
He's not an abusive man. But, I may as well ask him to fly as expect him to be emotionally giving when the going is tough. He goes the other way, and can behave like a right nasty bastard - but, it is absolutely, not INTENDED to be abusive. It's more just like he can't cope, so, he shuts down to protect himself.
If it were as it looks to outsiders, I'd have LTB years ago.
But, it's not as easy as that. I'd be leaving him because he is incapable of something.
Would I leave him if he lost a leg and couldn't hill walk? Or, couldn't go out for dinner because he had stomach cancer? "in sickness and in health" extends to him and his needs as well as mine. He's not ill, but, he has a condition that impacts on our life and relationship.
So, here I am. Trying to accommodate his needs, which only manifested themselves once the kids were born, whilst not being entirely crushed by it's consequences.
Sometimes, it's tough going, being married to man who can hurt you emotionally. But, he's trying to improve, and now, when the poorly baby (who grew to be a poorly child) is in hospital he ALWAYS texts (in the morning at 7am and in the afternoon at 2pm) and occaisionally phones (if there's time between putting the other kids to bed and tidying up and relaxing with one of his special interests) and has even visited him twice.
There's no doubt that this is a bit shit. But, the one thing it's definitely not, is criminal.