I'd add something else.
In addition to the lack of specificity as to where on his leg the break occurred and how quickly he received medical attention (and the quality thereof), we have no real information on how this happened.
Yes, there are some vague accusations about practice starting too soon for the season, but I don't buy that as the "cause".
Now, if these players were playing tackle football in the streets with no pads, then it can be inherently more dangerous than a supervised practice.
But just because the injury happened in July does not give me any indication of whether the practice was any more dangerous or injury-inviting than if this had happened two weeks from now.
No injury is a good injury. But even under the safest of controlled practices, with red jerseys and padded helmets, bad things can occasionally happen.
Maybe the "earliness" of this injury is suspect. Then again, these kids have been playing 7-on-7 for months, and could have been injured in those games as well. So I am going to reserve my opinion until I get more specific information.