[tialaramex]

The usual term is "Dancing pigs" rather than bunnies: https://en.wikipedia.org/wiki/Dancing_pigs

But this isn't quite the same thing, the dancing pigs (or bunnies) are an attraction, the mission mindset / get-there-itis happen after the user has decided to do something, and prevent them from (correctly) deciding not to do it in light of more information.