They've made $ 359 Billion dollars profit in 2023 alone, increasing their revenue threefold since 2010. 80% of their revenue is from insurance premiums so clearly they're over-charging and/or not covering as many claims as they should on a HUGE scale. This is pure exploitation and abuse.
When you exploit your customers like that in health insurance, it not only ruins lives, but also kills people. They can make all the mental gymnastics as they want, but the actions they've taken to increase their profits are literally killing people.
With 53 million customers, the number of people whose lives were ruined or lost by this blatant scam is in the millions. It was only a matter of time they'd end up pissing off a vengeful enough person.
I've said it before, and it's not always well received, but sometimes the lunatic with a gun or shiv is the hero society needs.
These people feel absolutely untouchable. Things like this help keep them grounded a bit.