Why are address labels on subscription magazines usually placed upside down in the USA?

Some members have noticed that the address label on the magazine is now being printed upside down. This is not a printing error. This is a new requirement from the USPS for periodicals using co-mail (which we do). The only way to print addresses right-side up would be to move them to the back cover, which we do not favor doing at this time.

https://www.usalaxmagazine.com/about-us

The labels are placed upside down to accommodate the postal carrier. All magazines are bound on the left hand side. Our hypothetical postal carrier, being right-handed, naturally picks up the magazine by the spine with his or her right hand to read the address label--the magazine is thus automatically turned upside down. But the label is now "right side up" and easily read by the postal carrier. Nifty, huh?

usps.com/all/shippingandmailing/welcome.htm no longer exists