Devils devils advocate here :) It's part of the nature of radio that you are in control of the channel, but not the message heard, as it's controlled by programming - the other kind of programming. This is dissimilar to telephone where a specific channel (number) is uniquely expected to reach a specific person, company, or household.

Thus the analogy breaks twofold. First, while the radio works as expected under these conditions, the telephone does not. Secondly, opting out means to take some action without affecting anything else than what you are opting out from. If you consider opting out in this context, it's clear that waiting can not be considered to be an action we take, and thus can't be considered a way of opting out, our waiting in line could be considered to be "opting out of standing in line", an obvious contradiction.