Yeah, well said! Sadly there are a significant amount of snake oil salesmen out there, claiming to have provenance when they have nothing of the sort. I hope for that family's sake that their information they got was true, because it provides a lot of help with grieving situations like that.
I for sure know what you mean about the abilities of children! My son had it for several years, where he saw the ghost of a man and interacted with him as if he was right there in the room with us. We couldn't perceive it as adults, but he did just as sure as he would talk to me and hold my hand. It was such a wonderful thing to experience!