Is it a stupidity or something else?

From time to time I receive job offers and do job market research to keep abreast and be well informed regarding the current state of IT sphere and what opportunities exist out there. As a result I have to sift through all kind of job offers and job descriptions which match “unix solaris san networking” keywords. And what I’ve noticed, actually I’ve made that assumption long-long before, that 99,999% of all offerings are alike and coincide with the same pattern: