Hyperpalatable is a new one for me. Overall I think it's going to be a hard sell to convince people that "food that tastes less good" will be much of a motivation.
As a mom, I think that having a lifestyle where both parents didn't have to rely on multiple jobs and overtime to survive would allow families to enjoy life and not have to seek out bursts of dopamine from the foods they eat as a bandaid.
I would assume it's acting out the way he claims the murder happened and see if it matches the evidence. From the article it sounds like there were inconsistencies.