My lad is 16.. I set him a challenge recently of using shavings and a flint n steel. He sat there for 20 minutes trying to light it unsuccessfully... told me it was impossible. Three strikes and it was lit.
Credit to him, he asked to do it over, so I got together more shavings... he sat there for another 20 minutes. No success, but he was trying his best.
Third time lucky after lighting it again, but nope... he's still struggling with it... but my hat goes off to him because he's determined to crack it.
Congrats for your lad though... 9 years old and a 6 for 6... as has been said, either a born bushcrafter or a pyromaniac