For individual play, exploration, and edification certainly do it, but sharing such software is careless. Consider keeping it to yourself, otherwise label it clearly for what it is: an experiment, a joke, or a personal challenge. Otherwise it clutter the ecosystem, divert newcomers from battle tested tools, poses security threats, deludes perception of quality by sending message that thoroughness and quality control aren't essential, diverts community to spent time on "useless" projects instead of addressing real-world challenges.