The article starts by claiming that "Delivery of first-class mail is falling at a staggering rate." I have never seen this to be the case. The article also fails to substantiate this strange claim.
Delivery of first-class mail is succeeding at a staggering rate. I have not had a piece of mail get lost in the US in decades, and delivery coast to coast is often within 3 days.
When an article gets its basic premise so wrong it is usually not worth bothering with the rest of it. It is better to tell the student to rewrite the entire essay and take a look at the second draft whenever it is ready.