I wasn't making a moral argument, I was making a practical one. The demand, in and of itself, means very little. Being notified may matter, but the fact that it was couched as a "demand" rather than a "request" is irrelevant. And the notice will only matter in so far as you are actually in breech of a contract or there is a tort or you are breaking a law. As you illustrated, it's primarily the ability to punish non-compliance that actually matters (via procedure, public relations, etc).

Through it all though, the fact that the other party demanded something of you instead of politely asked" or humbly requested is not really relevant. What matters is that you got notice. That's it.