Having read this whole thread, I have a few opinions and observations.
As a Seahawks fan, I am delighted to see Aldon Smith suspended for 9 games. That said, I do think some of the punishment is BS.
IIRC, Aldon was arrested for DUI subsequent to his stint in rehab. If my memory is accurate, then that is a legitimate reason to disregard rehab in consideration of his punishment, or to minimise such consideration. And if the airport incident was alcohol related, that also mitigates against rehab being a substantial consideration in reducing his punishment.
The firearms charges, IMO, are far more squirly. There were three components IIRC -- a couple people getting shot, not by Aldon, but at Aldon's party; discharging firearm (shooting a pistol into the air); and possession of "assault weapons".
The first of those, two people being shot by someone other than Aldon, seems to me to be a case of guilt by proximity. AFAIK, there are no laws or NFL rules against holding a party, and I'm not really sure how Aldon can be held responsible for other people illegally carrying weapons into his party. Yes, if it's his house, he has liability, I get that. But (I'm pretty sure) it's not like he invited people to bring weapons to his party, so those shootings probably took him as much by surprise as everyone else who wasn't aware other guests were carrying guns.
Admittedly, I'm making some reasonable assumptions here that may be inaccurate, but I'm pretty sure if Aldon had a more active role in his guests having weapons, and somehow facilitated other people getting shot, he'd be facing prison time.
The second charge of firing a pistol (not at anybody) involves less ambiguity. I don't think anyone doubts he actually did that. I do think there is room for mitigation, given how the party turned out. I think part of the problem was that he fired the gun into the air (IIRC), and if that's the case, he might have been able to mitigate the charge if he had fired into the grass instead.
The third thing about the "assault weapons" possession charges, I have a really hard time with. Those guns were not involved in any part of the disorder, were out of the way in a closet, and I don't believe the police really had any reason to be searching. (Maybe if drugs were found at the party?) But this is a case where Aldon was the victim of being on a team in a state where the gun laws are rather draconian -- if Aldon Smith was a Seahawk living in Washington, this would never have been an issue.
That charge in particular is every bit as much BS as the weapons charge Marshawn Lynch was charged with (in the same state, go figure), when he had a pistol in a bag in the trunk of his car. (Where the hell else was he supposed to carry it?)
I lived in California once, for about 10 years. You couldn't pay me enough to live there again (no offense intended to residents of California.)