Oh ffs.
Irrespective of the morality of Luigi's (alleged) actions (and let me emphasize here: killing people is wrong, even when the people are health care CEOs) he didn't do shit to change the system. He killed one guy. He inspired some memes. He got a bunch of CEOs to increase their personal security. Big fucking deal.
CEOs are fungible. Luigi killed one. His corporation replaced him, just like a broken part in a machine. Nothing changed and the world moved on.
The broken health care industry will be fixed - if it's ever fixed - by government action. We need single payer. We need universal taxpayer-funded health care for all. And we're not going to get that by shooting CEOs.