OP, you are right that there is hidden domestic abuse going on in these cases and it is a case of newspaper reporters not understanding DV and also the fact that these families can appear completely 'normal' from the outside. These men are so good at putting on a completely different persona in public: They are charming, upright, humble and down to earth in the public arena. They volunteer, hold high-ranking positions, appear easy-going and manage the family image, portraying to others that their family life is great, or they may make subtle comments to others to suggest to others that it is their wife who is 'difficult', yet in the privacy of their home they bully their wife and children and gaslight their wife into thinking she is the problem. I know because I've lived through this and my ex is still considered a fantastic guy and a great dad by our community, while I am consoling my children and picking up the pieces of their trauma. As soon as you start opening up to women about this you begin to get to know this is not as rare as you would like it to be. A man who can kill his wife and/or kids is not a good man who suddenly snaps! If he is able to kill he is able to lie, deceive and harm in a multitude of other, psychologically scarring ways, and has been doing so for years on end. He gets to a point of murder because his sense of entitlement to control his family has grown over the years.
Here are some points taken from recent articles on domestic violence:
Domestic violence can be indiscernible to those outside of the relationship since “Perpetrators often create a charming public persona, making it difficult for victims to seek help and be believed”. (onlinelibrary.wiley.com/doi/10.1002/car.2611)
Domestic violence includes coercive control, a gendered behaviour that is overwhelmingly male-perpetrated. (academic.oup.com/book/44707/chapter-abstract/378972050)
The impact of coercive control is cumulative rather than incident-specific; it involves a collection or pattern of behaviours. One such behaviour is manipulation of systems, eg. legal, school or community systems. Coercive control can include isolation and discrediting of the targeted partner. (pubmed.ncbi.nlm.nih.gov/35621362/)
"Performances of ‘admirable’ fathering were often targeted at professionals and wider communities (e.g. school staff, other parents), and could occur alongside fathers/father figures stalking, harassing and/or attacking ex-partners and children when out of the public eye.” (pubmed.ncbi.nlm.nih.gov/35621362/)