What is the definition of Instructional Infection?

An "instructional infection" is like when someone tries to teach you a new dance move, but instead of just showing you the steps, they're like this: "First, you need to squat down, then your toes have to touch the floor, and if you forget the 'chip off the old block' part, just wanna say you're a walking circus act."

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Here's a potentially unsettling example sentence: "The self-help guru's instructional infection of 'just read one page a day' convinced me to write a novel while my brain was still stuck in a coma from overwork."