[420basteit]

However, even supposing these congestions are important to human wellbeing, the argument still fails to be compelling because it understates the development of psychological knowledge that would occur alongside the technological development.

Why shouldn't the techno Utopia be able to take advantage of psychological findings to maximize happiness of humans? If the theory about congestion leading to happiness is true and empirically discoverable, then the techno Utopia can take advantage of it to increase happiness by integrating the 'best' kind of congestion possible into the lives of its human constituents.

I personally agree that these congestions are inessential. They are only desirable insofar as they force people who ordinarily "live in the fast lane" to meditate, daydream, and socialize. These are actual essential activities in my opinion. When inefficiencies are removed people will actually have more time to directly focus on these things, rather than having their meditation/social time relegated to periods where they are waiting on something they should not have to.