Thats a really frustrating example because there is a lot of evidence, and over literal years- yet nobody came forward which allowed him to be a predator for decades.

How can the law help if nobody is coming forward? I do not understand.

Your argument about guilty until proven innocent still doesn't stand though.

Johnny Depp was the quintessential counter-example of this, dropped by everyone and smeared publicly by the media; until his PR team with the help of the law cleared it up (a little too well in my opinion).