This is a sad story. I'm glad that creep was convicted of murder! After years in AA I would absolutely say there are more mentally ill/criminals/predators than the average group/organization. I've been triggered/approached several times by many very sick men! I started going to Women's only meetings & although not the "same type" of predators, they are STILL there. I've decided to stop attending AA meetings. It's just not worth it.
HOWEVER...I am sure there are people that AA helps. I'm unfortunately am not one of them.