Mangione is accused of leaving behind evidence showing disdain for the insurance industry. Similarly, the NFL headquarters gunman identified as Shane Tamura left behind a handwritten note blaming the league and football for causing chronic traumatic encephalopathy, known at CTE, prosecutors noted.
I believe there is talk of that evidence being mishandled or planted.
Luigi Mangione may not be a “hero”, but healthcare insurance executives are surely villains, and they, as well as billionaires, should not exist, because they represent an existential threat to us all.
So he took out a threat to us, I think that qualifies him for hero status.