From your link: "The book
Familicidal Hearts: The Emotional Styles of 211 Killers, claims that this type of killer often feels that they've failed to be a man, according to societal standard of manhood.
"Many times it's for financial problems,” Garrett told ABC. “And the belief is that men, in particular, will kill their family because they have lost their ability to support them. And it gets into the male ego identity.”
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I have believed since the week of Aug 13 2018 when I started posting here, that Chris Watts' family annihilation was due in large part to Shan'ann nearing or passing his earning potential. She had all the rest: the drive & energy, the can-do spirit, the all-important supportive friendships, the loving family, the mutual adoration with her kids, while Chris was an empty shell with his only claim to self worth being that he was THE breadwinner.
I don't think this factor can be underestimated. There are crude terms which sum up this dilemma facing some men, albeit in their own minds....refers to figuratively losing a part of one's anatomy, the family jewels.
It wasn't the finances of the FAMILY, it was that she far surpassed him in all categories except for mastering a 12" crescent wrench, and now she was making a lot of money too.