I think it really is not question of how much taxes add up or get saved, for most customers its to ensure filing is done properly with right data so that it leaves no room for IRS to ding people due to a software not able to handle this situation leaving customers jump hoops to duplicate forms and calculate manually. like IRS only expects Various if the 1099 doesn't provide information on the different countries, however if information is there its kind of implied that people are expected to report at individual country level.
