Agree reading the article, this is a non issue.  The mail is delivered where it is supposed to be.  Just some attention doing.

The Post Office inscription says, "Neither snow nor rain nor heat nor gloom of night stays these couriers from the swift completion of their appointed rounds."  
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It does NOT say, "Neither snow nor rain nor heat nor the gloom of creepy, ugly, fat, wrinkly, naked old nudists shall stay these couriers from the swift completion of their appointed rounds."

Suing the post office because they feel they are entitled to special services. The postal worker is doing her job. Delivering mail to the mailboxes, where it belongs. The guy that is not getting his meds on time should check his mailbox more frequently, and not wait until he runs out before he reorders!