It’s actually not that much of a joke (although it may not be Abrash) - often higher level positions have the job listing tailored to only one candidate that they already know is interested. To satisfy legal you have to advertise the position externally and internally but if you want someone specific setting unreasonable minimum requirements, that only they have, is a way to get there. Similar things happen in consulting contracts all the time. The RFP will be written for a particular company.