In the gymnastics center I used to run I had a girl break her arm doing cartwheels in warm up lines. In cheer I have seen a girl tear ACL, MCL, Meniscus doing a standing BHS while being spotted, another break an arm doing a Back Walkover down the wedge, and had a girl who could do double fulls and specialty passes thru to double fulls break a knee cap while only doing a ROBHS (she tried to stop herself when she heard the bell ring for someone getting a new skill and pop her knee went) Regardless to the skill level of the athlete it can happen. It does't always happen on the "dreaded double full that only big/mega gyms can teach properly" (sarcasm folks) which is another reason I say that report years ago was baloney.
Injury prevention is more than be qualified to teach. It is knowing how many reps an athlete can properly handle safely before their risk of injury is raised to unsafe levels. It is in monitoring the amount of hard landings an athlete performs in practice, tumbling class. It is conditioning the body to be successful in each skill, not just a general conditioning program. It is in making them mentally aware to take the next step in progressions safely. it is in the amount of practice reps they complete safely before you ever let them them throw it for real on the floor by themselves and then in having them throw it for real on the competition floor numerous times before they ever think about competing the skill.
Many of these things are simply not practiced for many reasons. None of them good reasons IMO and all increase uncessasry risk to athletes