It was hysterical and you have to know that "The Onion" is a parody newspaper in NYC and a very funny one. The reason those editorials are funny (yes there is more written just like those and they are very popular) is because H-Dog is supposed to be that geeky white guy Accounts Receivable supervisor. It is very funny to read him talk about all the corporate accounting problems in the homey street style.
If you dont find it funny, you either have a strange sense of humor or just too young and dont know about the corporate world.