Getting one wrong doesn't negate the ones gotten right. Getting one right doesn't negate getting one wrong. NONE OF THEM have to do with each other. One person's innocence doesn't negate the guilt of 1, 10, or 100 others.
Each trial is supposed to be based on its own merits, which is why it is wrong to judge 200 million people today for the sins of 100-1000 from 100-150 years ago.
We need to stop thinking of things as a "if one innocent person dies than it all needs to be thrown out" extreme fallacy. That's just a bunch of Hollywood BS that even they don't believe. It's drama. It's ignorant.
We also need to stop courts from looking at a rapist, abuser, or murderer from the standpoint of "what about the good they could do going forward" or "what about the money they gave to charity for years" viewpoint. Look at the case. Look at the evidence. Look at the loss of dignity, the terror, the emotional harm, and the loss of life of the victim or victims. I'm tired of seeing them treat rape as a victimless crime. Same for child sexual abuse.