I'm going to go ahead and keep the opinion that this is a melodramatic preliminary to a financial shakedown, but you think what you want.
Some of it may very well be. It sure was in some (if not many) accusations against Catholic priests and other clergy. Those cases went back decades and often key witnesses and even the accused were incapacitated or dead. There is a reason we have a statute of limitations.
There are law firms that solicit for such cases. I expect we will be hearing from them soon enough. It makes one almost long for the days when the prospect of clean and simple blackmail stayed the hands of some perverts.