Sure, thats not a bad thing. With income tax I have to pay tax for the money I make, but that money gets re-taxed on the way out too, in other words, all tax tends to work in both directions, its a feature not a flaw. The important part is that we distribute the taxes across behaviors we want to discourage. No one should be discouraged from earning a lot of money (income tax), but generally we want to discourage spending (sales tax and tarrifs), ideally in a way that puts more tax burden on luxury items.
So anything we can do to move taxes from an income tax to a tarrif/import tax/sales tax is a good thing. The fact that it works both ways is normal and expected and shouldnt discourage that.
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