> So re-frame it as the removal of the exemption. Makes no difference how you spell that out, it adds up to an increase in taxes on goods sold / bought for American companies.

No, it doesn't. US buyers were already responsible for local use taxes for remote purchases. This just shifts who is responsible for the taxes to the retailer (if the taxing states opt-in, which requires them to adhere to certain tax streamlining provisions and other requirements that make the process simpler for retailers.)

This is a tax simplification and collection efficiency measure that doesn't change the amount of tax due on any sale.