The cases of my 13-yr-old aunt and I happened in the early '60s.
This deceit has been going on for many many years. Some ex-JWs have told me their abuse occurred even earlier.
Historically, most people did not want to deal with this issue. It was never reported. "Uncle Bill" was funny, or liked to diddle little kids. It just happened and no one did much to stop it.
Very rarely was the accused shut out of the family. Mostly it was hidden allowing the accused to continue to abuse the child or move on to find other victims. One estimate is that a true pedophile has up to 70 victims before he is stopped.
I say a true pedophile because the definition of pedophile is that the person main attraction is to children. But not all people who sexually abuse children are pedophiles. Some just take advantage of a situation and children are easy targets. My father and stepfather do not fit the definition of pedophile even though both had many victims. My father was an situational sexual offender. If no adult was available he turned to children. My stepfather, on the other hand, thought all females were his for the taking regardless of age. Both regularly had sex with women. That was most likely their preference. But under-age girls would do just as well if they were available.
Unfortunately, we don't make that distinction among the exJW community. Some may be pedophiles but I suspect most are situational offenders or molesters.
Either way, the WTS, like the pubic ignored the problems (thank you Dr. Freud who lied to protect his reputation).