Here's what we we do know.
So, are we all just going to gloss over the fact that all of his peers got plea bargains while the person who has a mental disability is being put in jail for life (Not coming at you, just frustrated)? They admitted he wasn't the ring leader. No body could verify, besides his buddies, that he shot a gun at all. Nobody was hurt. They're going to put somebody in jail for their entire life who's brain chemistry causes them to have mild mood swings and who has an issue retaining information.
He's going to go insane in there. Normal, rational, well balanced people who make a minor mistake go crazy after a few years, this is beyond that. This situation is just crap. He shouldn't get a pass but he needs medication and therapy. Who cares if it's on the public's dime, they spend way more money on other unneeded shit. Getting this man in a program for some help would probably be cheaper than keeping him in a cell FOREVER.