You are right. However, is there redistribution in the taxation system itself like we currently have through progressive taxation and the gawdawful EIC? If we can chip away at the redistribution, is that not a step in the right direction?
Aside from the actual need to file a return, what's the NRST have that a simple flat tax wouldn't (aside from the "underground economy" angle, which mostly involves skirting taxes for illegal things that should be left up to states to decide whether or not they're illegal anyway)?