Okay, at the risk of being that person, the F-35 loses in a stand up fight because it's not designed in a doctrine sense to get in stand up fights. On paper it's designed to leverage its status as a stealth fighter to avoid those stand up fights by either avoiding them entirely or get one of the most important things in a A2A engagement, getting the first missile salvo off.
So regardless on how actually good the F-35 is, having it's blueprints to have the knowledge on how to counteract it is still incredibly useful in case it happens to be very good for what it's designed to do.
The key thing here is that this isn't designed to directly discourage the kid, the purpose of doing this is to get the other kids to let's say do some creative persuasion techniques to not do that again. You might recognize this as one of the stereotypical methods that a military would do when dealing with problem soldier, punish the whole unit/squad instead of the single soldier.