You could very easily argue a UBI dramatically reduces the amount of information the government has on current welfare dependents. Besides, it can't possibly be any more "tracking" than what the IRS already does
Considering the population involved in taxation is ~48% I feel like 100% is a bit higher. There is certainly additional tracking based upon the listing of dependents ect. but I'm confident it's less then every single US citizen.
Nearly the entire population, at least those of working age, are involved in taxation to some extent.
Everyone pays, directly or indirectly, sales and property taxes. Every employed person ,that isn't paid under the table, pays payroll (ok, a few legal exceptions to this) and income taxes (if they make enough money). Those who don't make enough money to pay income tax are still involved with the IRS because they need to file for refunds or other programs they may qualify for.
