Doesn't this end up implying that a city that was made entirely of dead-end roads would in some sense be very 'good' as it would lack all congestion? Portland s

Doesn't this end up implying that a city that was made entirely of dead-end roads would in some sense be very 'good' as it would lack all congestion? Portland seems intent on trying to prove that argument, but just because there would be no congestion in such a city does not mean that there is no value in making the roads efficient even if congestion remains the same. Sure, congestion doesn't decrease with more efficient roads, but efficient roads can clearly have a higher bandwidth. A saturated dial-up line is not of the same quality as a saturated fiber line, even if packets are being dropped because the line is saturated, unless your protocol (roads) are of a deeply inefficient design to begin with.