I don’t think my correct characterization of a fictional being has any bearing on whether or not it exists.
If you’re granted “fictional”, then no. But if you don’t believe in unicorns, you’d better mean “magical horse with a horn” and not “narwhal” or “rhinoceros”.
If you’re granted “fictional”, then no. But if you don’t believe in unicorns, you’d better mean “magical horse with a horn” and not “narwhal” or “rhinoceros”.