Look, this is some horseshit, I'm not even trying to excuse it. But find me an organization in this era that wasn't doing the same shit.
ETA: I think we seriously underestimate just how secret squirrel abuse used to be. Only recently is child molestation and pedophilia something we discuss out in the open, root out, expose, and prosecute. Most people kept it quiet regardless of the offender, even if it was family, especially if it was family. So it certainly wasn't a priority for most people to make noise about. I'm not sure if that can be laid squarely at the feed of these various organizations.
The good news is that the code of silence surrounding these crimes has been lifted and we know more about how these things happen and how to prevent them than ever before . . . unless you're apart of the NCAA obviously.
Those were the only files available. It doesn't mean the coverups or the abuse stopped in 91. The organization won't release any files from post 1991 (and they only released these because of a court order, I believe).
ETA: at any rate, I find "meh, everyone was facilitating child molestation back then" to be a very odd response.