I guess, all that this says is:
Path is the least important road, route, way, or thoroughfare on land which connects one location to another and has been paved or otherwise improved, including by mere trampling by a sufficient number of humans, to allow travel in some way, including by motorised vehicles, cyclists, pedestrians, horse riders, and others" [c.f.]
PS: Not being motorist, that is why I find the idea of pathway=* so intriguing, as a new top-level-key, that is. We just lack some clever values, I do not think primary, secondary, … will do.