I think you might have a bit too much faith in the criminal Justice system, no single person I know working in it respects it and considers its rules a burden to their job.
AA took it upon themselves to identify the guy and made a false accusation against him. They also have deep pockets. They're likely both the easy and big-paying target. If I was suing everyone, I'd get the big payout first and then sue everyone else using that payout to fund the lawyers.