Sounds like this could inspire a simple test as to whether someone should have access to classified information, which would also positively indicate their more mature than a twelve year old.
At least once, someone has reported online that they were asked if their friend played War Thunder when they were doing an interview to explore their friend's getting a clearance, so...
There are also lots of people creating fake classified documents, and people in posession of "classified" stuff that has long ago been declassified. Those two groups, imho, outnumber all the people who leak actual info by 10x.
(Remember too that having a clearance and having access are different things. Only a rare few have unfettered access to download/print/email to/from classified systems. Lots of gamers work at/for the NSA. That doesnt mean they can all browse the f35 flight manual over lunch.)
There's a lot less security around that data than you'd think, there was the very recent saga of Jack Teixeira in the Air National Guard who was smuggling out tons of classified data to impress his friends on Discord just by taking documents out or sneaking his phone in to take pictures. There's a LOT of people with access to the data and it's partially on the honor system and the threat of massive jail time when you're caught to keep people from doing this all the time.