Excellent points.
The FairTaxers make many assumptions about human behavior that are deeply flawed.
They're points of policy that need to be addressed - is this the desired end goal, not falling into the same mantra as the FairTaxers. I think we've come to the point where people are fed up enough with the existing system to be willing to talk not only about options, but hopefully, the profound changes in our entire economy those changes will bring.
Or we can continue on the FT is good vs the FT is bad debate, and end up in a circular argument.