While throwing 101 mph at 16 is extremely rare and a sign of exceptional talent, it also carries significant risks of injury due to the immense stress on the arm and shoulder. It is not necessarily "too young" in the sense that it's impossible, as evidenced by the 16-year-old pitcher Striker Pence, but it raises major concerns about long-term durability and requires careful management. Proper coaching and a structured development plan are crucial to mitigate these risks and help a young pitcher maintain a sustainable career.