Oh, do you know why I don't think it's okay to delete a town because a dreamie moved in a bad spot is because it's at the pinnacle of stupidity. Not only it's extreme, but they should try cycling.
To sound more ethical, would you really delete your town in sake for one animal moving in the wrong spot when you put a lot of progress in town? All the museum donations, items cataloged, encyclopedias completed, and PWPs unlocked, all will be gone if town was deleted. If you had some completion, that's one thing, but if you had a lot of completion, you're gonna have to worry about doing that all over again if you delete town. Some reasons to delete town are easily understandable, but deleting it because of one animal is ridiculous.
The same is true if we delete town because of dreamies leaving.