> All I see is a genetic fallacy, namely appeal to authority.
Appeal to relevant authority is not a fallacy.
> because we have Austrian and Keynesian economics at battle in America.
This is a common misconception among "armchair economists". There is no battle betwen Austrian and Keynesian economics in America today any more than there is a battle between Confederates and the Union. There was a battle, years ago, but it has been over along time, although there still are a small number of weirdos still carrying on.
Now many of the conclusions of Keynesian and Austrian economics are still alive and well, but the reasoning behind them is completely different, and the war today is between camps with names like Monetarism, Lukasian Rationalist, Chicago School, and so on. The people in that poll are not citing Human Action, anymore than working programmers today are citing the 8088 specification. It is a thing that happened, it was important at the time, but we've moved on.
> The debates are not about things like the validity of the technical aspects of Adam Smith's Wealth of Nations. The debates are about whether the individual should be allowed to prosper any longer.
Have you read an economics paper? They are so technical many programmers cannot get through one. For example, here's some random abstract from the SSRN [0]:
> We provide a formula for the tax rate at the top of the Laffer curve as a function of three elasticities. Our formula applies to static models and to steady states of dynamic models. One of the elasticities that enters our formula has been estimated in the elasticity of taxable income literature. We apply standard empirical methods from this literature to data produced by reforming the tax system in a model economy. We find that these standard methods underestimate the relevant elasticity in models with endogenous human capital accumulation.
There is no debate among working economists about "whether the individual should be allowed to prosper any longer". It is like suggesting mathematicians are debating whether imaginary numbers exist.
[0] http://papers.ssrn.com/sol3/papers.cfm?abstract_id=2688947