Thanks for the reminder about Lind.  He keeps disappearing from my reader feed for some reason.  I just added him again and found his latest comparing a broken red state economic model to Walter Russell Mead's broken blue social model.  It concludes:

The red state model is (also) broken - Great Recession - Salon.com

Both the blue economic model and the red economic model are parasitic, not productive. Neither provides a model for a decent American future.

Amen. What other conclusion is there?

I have finally had the chance to read the whole article, and in a sense its entirety is the authors explaining why the class-based political agendas are now irrelevant.  So to answer you would require pasting the whole article.  But this snipet touches on a key facet:

A new progressive politics must take liberalism's commitment to broadly-shared prosperity forward while leaving the old, redistributive agenda behind. The poor become middle-class and the middle-class becomes affluent largely through economic growth, not wealth redistribution. Effective strategies to grow the economic pie may require asking those who have reaped the most from the fruits of modernity to pay more of the costs associated with its extension. But these strategies must be in service of greater opportunity, modernisation and growth for all, not economic redistribution. In the end, we are more likely to address poverty and inequality through expanding social, economic and technological possibilities than through large-scale redistributive strategies.

Growing the pie will require that the US recommit to its historic strengths in science, technology, and innovation, rather than doubling down on demand and consumption. In contrast to conservatives, who deny that government has any role whatsoever in promoting economic growth, and traditional liberals and progressives, who offer lip service to science, education and new technologies while prioritising entitlements, subsidies for mature technologies and trade protections for old industries, new liberals must offer the US a serious and proactive programme to accelerate innovation and economic productivity.