Obviously if a player believes that it makes no sense to seek an audience, they won't (if they care about breaking the game). That's just a trivial consequence of the fact that players control their action declarations for their PCs.how is using a feature as written breaking the game? You can find a reason for the audience, that does not mean the players get what they want from it… this has been brought up countless times. Do you not agree with that?
Are you saying the players can decide when an audience is unreasonable (and then not ask for it) but the DM cannot (reject one they asked for)?
What happened to ‘D) I’d make it work somehow’?
You said the players know that the usage is next to impossible, yet declare the action. If the player really believes it's impossible - which is what I took you to intend - then this player is breaking the game.
If in fact the player doesn't believe it's impossible, then we are back in the territory that @hawkeyefan covered thoroughly upthread - the player has something in mind, and if it's not obvious to the GM what that is then it can be worked out via conversation.