There is no chaos to jaywalking because jaywalking should be the default. Only in non-pedestrian cities is jaywalking taxing.

I come from a city where people jaywalk(Stockholm). Jaywalking makes the city extremely walkable, and quite frankly I suspect it was designed with jaywalking in mind. It is obvious when someone is not from Stockholm - they wait for the signal.

I don't get the ease of jaywalking in many other large cities I've been - Zürich comes close. In the UK, even crossing at a green light feels dangerous.