I think the whole crux of this is that back then it just wasn't something you reported to the police.
My mum had a headteacher who used to get girls to sit upon his knee and he'd rub his hand up and down the girls' thighs... creep yes, abhorrent, yes. It never ever occurred to my mum to involve the police, or even tell an adult, it was simply accepted as something wrong that you simply didn't talk about.
Times HAVE changed. All those people who believe they were abused now have the strength of being taken seriously on their side. They are going to speak out. They're probably all going to do it at once because suddenly IT IS OK to speak about something that happened a long time ago, it doesn't make it less wrong. For the first time they are feeling braver AND being listened to.
There will undoubtedly be some people who are lying. There will undoubtedly be some malicious accusations. There will also be a lot of revelations which are true.
I suspect that in 20 years time there won't be such an outpouring, because hopefully in 20 years time victims will feel that they will be taken seriously, and the process will be anonymous for all parties until guilt has been found.
This is a massive step in the right direction, but it IS hysterical and seems it due to such a huge backlog of cases/crimes/time.
The celebrities are not all guilty. And some of those who ARE guilty of what they're accused of could be excused. When I worked in theatres, there were no end of grubby girls queuing up for grubby sex with a grubby celebrity, perhaps some of those accused are guilty of not ID'ing everyone (still a crime, sex with a minor of course, but there are times you really do not think to check, especially if a women looks well over the age of consent and is consenting or trying to, every night for a week). I have seen both sides of this row.
These current events will create victims. It will also give some victims closure. It is nothing to be celebrated. Nothing to be shocked at either, it's 20/30 years of silence and culture exploding. It needs to be dealt with anonymously, seriously and each case needs to be seen individually. It won't be though. Hopefull at the very least it will signal the end of casual cover ups, and give victims confidence to tackle the crimes at the time.