Because in order to set up a wireless printer you need a USB cable. HUH?
I actually found an old forum with instructions on how to do it without one but anyone who is not even just a little bit technically minded would have no clue.
So our printer is set up. Wirelessly.
Which you should be able to do with ease. Since it’s, ya know, a wireless printer.
But it took some tech know how and a lot of searching and help from a wonderful person on MN, @boborama, who found how to get a network configuration page out of the printer (Hold down the scan button for 4 seconds. Yes. Of course. First thing I would have thought of. O_o).
And now we can print.
But still.
HP sucks.