That's ridiculous semantics.  You've already said you don't care how they choose the coin you destroy.  Well, they choose through extortion.  Whoever doesn't pay.

They rely on you to carry out the plan.  You unleash on the chosen coin, and you've already said that whichever they choose is fine with you and you don't need a reason.

It's absurd to claim that you are not part of the extortion plot just because you are not the one receiving the money.