Yes, his message with the shooting was directed to the entire health care system! Amazing he just looked up health care companies, and Brian Thompson fit his plan.
Re Back issues, mitigation, I think Karen I. ( defense) will try everything she can.
He obviously had a lot of metal in spine, previous surgeries. His back had gotten a lot worse, after a surf slip, about a year or so before the crime, physical activity had slowed down.
He did a No Show on one of his best friends weddings. He was out of touch with many regular contacts, including his Mother. Mom knew he was angry, resentful, mentioned to investigators the shooting seems like something Luigi would do! (paraphrase). Of course, she did not condone shooting, just a mothers insight into her sons state of mind.
I’m not defending his actions due to back pain, absolutely not! Many people are disabled, frustrated sometimes, No excuse! Just saying defense may try this tactic.