I disagree too.
Scratch the surface of a repeated pattern of episodes of rage, shoving, and any other behaviour that has the effects of intimidating or physically dominating another person, and you will find a person who very likely has completely devalued their victim, or someone who perceives himself to be the victim of the other person, or someone who is rejecting and hurting the victim before they reject them.
The effect on the victim has to be taken into account - a once off episode of rage, rape, physical violence, etc. can be enough to terrify a victim.
But it's the response of the perpetrator when he realizes the effect of his behaviour that is always very illuminating. The true abuser will engage in the cycle of abuse, though there can be individual variations in how he behaves. Abusers engage in manipulative, blaming behaviour, and if they ever apologise, it is always with the aim of reeling the victim back in to hold her in place for further punching bag practice.
Also, abuse rarely takes just one form. Obviously, there's a psychological and emotional element to pure physical violence, with victims often suffering from PTSD and cPTSD. But there can also be verbal abuse, abusive accusations, blame, and jealousy; sexual abuse, abuse with a religious element, withdrawal of affection/ silent treatment/ sulking; financial abuse, creation of chaos, serial cheating, abuse of male privilege. These can all take place simultaneously or in various combinations.
People who lose their shit on a once off basis, are horrified by their behaviour, take complete responsibility for it, apologise sincerely, and make amends for as long as it takes to earn back the trust of the person they abused are clearly not people who have a personality disorder.
The difference between them and abusers is the recognition of trust and mutual guarantees of emotional, psychological, sexual, and physical safety as the basis of a healthy relationship, and their efforts to rebuild when they breach this foundation because they recognise their responsibility for the breach and the importance of mutual trust and safety in a relationship. Abusers will never acknowledge personal responsibility and do not see relationships as a matter of mutuality - they are players of power games, other people are two-dimensional providers of supply for them; relationships serve their bottomless and completely insatiable ego needs .
The patterns associated with abuse in intinate relationships are a large part of how a picture of a narcissist, EU/ borderline, or histrionic individual can be built up. These individuals can sometimes mask to a certain extent in their professional lives, but often they will not, and they will have chequered careers. Sadly, there are careers where being a narcissist or sociopath will boost your path to the top. A lot of lawyers fit the bill, ditto CEOs. Not all, but more than the general population.