(a) There is no real flaw here, other than the potential for maybe sending scary messages to people's In Flight Entertainment screens, and so the disruption he's causing by suggesting that there might be a flaw has no upside.

(b) There is a real flaw here, for instance a message he can send across in-flight wireless that would deploy an oxygen mask, and his broadcast that he intended to tinker with that system is actually threatening.

Am I missing a case (c) here?