How do you not see that as tricking someone? That's almost a textbook example of how to trick a person. And don't hide behind the ToS to pretend you aren't being rude. You're intentionally going out of your way to make someone elses life worse. Whether or not they were rude first, just take the high road and move on.
Edit: Best possible case this is morally neutral. But you definitely aren't the good guy here.