Re: Why a joke?
I read that as "why is a random route generator a joke?" rather than "why make a joke about this topic?". A random route generator, if you're cycling for pleasure, would be a very useful thing I would have thought. Just tell it how far or how long you want your ride to be, and let the cycling app generate a suitable route.
As a motorcyclist who enjoys riding back roads for pleasure I have often made up rides as I've gone along, particularly when making my way home from work on a warm, sunny, summer's evening. One way of doing this is to use an electronic die stuck to the left bar -on approaching a junction press the button and turn according to the result, always using lowest values to mark off roads from the left (so for example approaching a T junction and "rolling" 1-3 would result in a left turn, 4-6 in a right; at a crossroads, 1-2 left, 3-4 straight on, and 5-6 right, and so forth,)