In my experience, over 10 years ago the WTS was "taking it serious" on matters of CSA. I think the pendulum has swung the other way and they are reporting anything that in any way might be considered illegal. I know of two families who dealt with this where their "children" of 17 and 22 years of age were said to be "involved" even though it only involved "photos".
After being told that the elders were consulting with WT Legal, the families were on "pins and needles" as to what kind of shit this could bring upon them from a legal standpoint. Both families were financially well set and went to their own attorneys and were told it was all BS as even the 17 yo was of the age of consent in this State. And in fact, WT Legal said the same. But it proves the Elders have been warned to call Legal if in any doubt. I'm convinced the alpha elder had an ax to grind with one of the families.
You'll notice that most of the lawsuits you hear about today are from events years ago and would have been beyond the statute of limitations if various US States had not lifted or adjusted the rules on SOL. The WT may snort and blow about NEVER giving up on the "two witness rule", but that is all posturing. They want the lawsuits to stop. Of course, it has more to do with protecting their bank accounts than protecting the kids.