It’s surprising how much you can get done these days without needing to call anyone, line up, or make a visit to an office to figure out the correct form to file something.
Random example for you: the IRS hires 10k people every year to type numbers from returns into the computer. This is a decrease from earlier, since e-filed returns don’t need to be redundantly retype.
“IRS employment down from 19X0” You’d certainly hope so, now that they’re no longer artisanally handcrafting every comparison of a 1040 and W-2.