The article is poorly written.  It has nothing to do with a reader's IQ.  It has to do with the ability of the writer to convey the information in the simplest terms.  Ergo, it is the writer who is lacking in talent/IQ and not the reader.  You can compare two math books and you will see: most people can't understand higher math because the guy writing it can't understand how to convey information in simplest terms.  The goal is understanding and not obfuscation or worse, to show how 'smart' the writer must be.  If the writer can't clearly explain what cloud computing is in 25 words or less, the writer shouldn't be writing about it.