It may be an unpopular opinion but even abuse claims should be subject to statute of limitations. I am not dismissing the real horror of abuse sexual or otherwise. I am being honest about human nature and how it is difficult to mount a defense against memories.
There are statute of limitation laws for a reason. You can be sure a portion of those bringing claims were sought out by attorneys. Their claims may be valid or they could be matter of convenience relying on imperfect memories, dead witnesses, and allegations which are hard to investigate.
There is no Statute of Limitations on certain crimes, murder and in many states, Armed Robbery, for instance.
Rape and other sexual crimes leave a lasting scar on the mind and mental health of a person that is abused, and it never heals or just goes away.
While in this particular case the perpetrators are most likely long dead, the institution that protected them and hid their crimes should face the punishment that they deserve....................