Why exactly are the kinds of things going around granting wishes so obsessed with interpreting them in the worst possible light? It’s just so inconvenient. Who benefits?
One Million Ducks in Wiscasset
I know the behaviour to which you are referring, but most beings that can grant wishes don’t actually do this. You, for example, have probably not done this and yet if you started scattering dried corn about you right now, you would be satisfying the wishes of (I assume) roughly a million lesser beings.
Those who are really into the high-visibility wish-granting game (leprechauns, captive djinn, certain wells, the elder fae, etc.) are usually doing it with an ulterior motive. In most cases, that motive is art. When you are a thing out of time, (meaningfully distinct from immortal) you start prioritizing your actions and use of time differently. There’s an entire camp of creatures who have gravitated toward an outlandish appreciation for irony. Simple as that. There’s whole museums dedicated to the great dickery of the past, and many a young spirit has admired the flourishes of particularly cruel fairy godmothers.
Who benefits? They do. Because in your vanity you asked for a million followers and that’s exactly what you’ve been given. They just did it in a way that would win them street cred within the semi-abstracted community.