It remains to be seen what this guy's motives truly were. He seemed to have awfully specific and reliable information. And based on his clothing and accessories (if you can trust a meme, lol) he has more money than most making a denied health care claim a little less likely as a motive. At least a personal motive. But then i have sneakers that look an awful lot like the ones in the bad surveillance photo and they aren't calfskin and they only cost $30.
Pretty sure the meme is just exaggerating the fact that the backpack was expensive and unique-ish, along with the peculiar gun. The entire triumvirate of doctors/phrama/insurance is an insane monopoly on the people. Especially in USA. It was only a matter of time before someone snapped as a result of our own corporate policy.