Earlier quoted context omitted.
> have I ruined someone else's game just by the perception that I could have? You probably aren't ruining anyones game if you aren't competing, but you are still cheating.
...and? Sometimes the best part of a game is finding the most entertaining ways to break it, and if that doesn't directly harm someone else's enjoyment, then I frankly don't care what you wish to call it. Cheating without benefit against someone else just doesn't have the ethical zing that unfairly grinding someone into the mud would.
However, plenty of players that have cheated by using the map tools do place Pokemon in gyms. That is also unethical (even though I would consider it a pretty minor violation as far as ethics goes).