Always_Ask_Questions,
“I am trying to analyze expected outcome. If the parents are “one trick ponies” and are continuing using same approach, then you should expect that and evaluate whether your information will do any good for anyone.”
This is simply a reiteration of the point I questioned. It is presumptuous to assume that an outsider can forecast expected outcomes with any degree of confidence. Good luck forecasting outcomes in one’s own home! It is disrespectful to the parents to declare them “one trick ponies”, and to withhold information because you personally don’t like their rules or how they’re enforced effectively disempowers them and undermines their authority. Of course this is not referring to abusive situations, but a parent locking down or confiscating a computer or phone is not abusive.
This is not to say I advocate for outsiders to just go run and tattle on children for anything they do. I agree with you that a rav should be consulted for how to proceed in this situation. An outside observer may not have all of the facts. One must be careful regarding lashon hara even in a parent/child relationship, and tochacha must be tailored to the individual receiving it, and must be done out of love. But to davka withhold information from parents because you don’t like their stance on electronics and consider them to be unthinking oafs who would just double down on the rules you don’t like is not a valid factor in this decision.