After criticizing my argument that looking at spending of taxes is necessary to argue if its progressive or regressive, you now propose an argument that would m

After criticizing my argument that looking at spending of taxes is necessary to argue if its progressive or regressive, you now propose an argument that would make progressive taxes also regressive unless they are enough to compensate the utilitarian value of how the poorer and the richer spend their own wealth. The utilitarian argument is for me one of the most practical and also one of the most scary. Are you ready to exploit the poor if it were proven that it was economically profitable to do so? I digress. My point is that seeing flat taxes as regressive is either false or inconclusive, regardless of the desire of being flat, regressive or progressive in taxation.