I read Norris' article and was about to write the same thing. The gubmint will never give up a means of taxation, and they drool over the thought of finding another way to take money from us. And don't forget the Fed is printing 85 billion a month, so any savings or wages we make are being devalued by the "hidden tax."
Because the income tax will never go away, the flat tax is the only truly fair way to provide income for the gubmint. Everyone should have skin in the game. And while many will find ways to avoid even that tax, people will find ways to avoid a national sales tax as well.