I get enough spam on my fax machine, so I’m not sure I would want the world printing to my printer too.
The only people who can print to your Cloud Printer are those who have the account name and password.
I figured that much.
Anyway... there’s probably a solution to your issue out there somewhere.
As for me, if I need to print from afar, I can email the document to someone near the printer and they can print the document. I can’t think of why I would need to print to a printer that doesn’t have a human nearby.... but I would love to be able to print stuff on the White House’s printers.