Disagree that good pre HS performances only means they are already training like HSers (see Engelhardt, Ingebritsen, Tostenson, etc.) but agree with the implied takeaway here as to the above-mentioned runners that these times don’t mean much moving forward. It’s because these times aren’t THAT fast. A year from now they could make normal annual improvements as 9th graders and they’d be on no one’s radar. Find me a JH kid who’s competitive with HSers and then I’ll get excited (I say this as a parent of a super fast young kid—gotta keep things realistic, people).
But that shouldn’t diminish from the OPs point. It’s pretty neat to have another kid in a fast family who is already showing some promise however you slice it. That’s positive and worth celebrating.