How dangerous is kids and teenager bouldering on the fingers?

During the last few years, we have seen an extreme development when it comes to bouldering performances for kids and teenagers. We have also heard about several injuries and also studies saying hard climbing training and especially bouldering is dangerous. At the same time, however, very few of the very best famous youngsters have ever had any serious injuries and Robyn Erbesfield-Raboutou, who probably has had the most experience of hard youngster training, reports no injuries. Maybe one way to explain this contradiction between theory and practice of the best is that all the famous youngsters have started climbing as they could walk and gradually have increased the load and also have had a great focus on outdoors. This could be compared with guys starting climbing intensively from the beginning as a teenager with a focus on indoors, finger training and competitions. Please share stories of what you have heard or experienced when it comes to finger injuries and kids.