coz96 seems to have it correct.
I wish slang had never been invented. if you are not " with it " (slang), you aren't cool, and if there is anything a pilot wants to be , it is cool.
and people yell at me for saying "wilco", "fife", "fo-wer" and the like. you should be uncool for using slang on the radio.
Some of the problem in the article is a journalist who has to edit remarks for non pilots. To have the journalist explain the difference between a takeoff clearance and an IFR release/clearance would take more room than a newspaper has to spare for an article.