Sounds like a joke to me. Covering up one betraying sound with another betraying sound- sounds like the punchline of a "moron joke".
There are indeed examples of counter intuitive tactics like that. For example a famous magician saved the Suez Canal from destruction during WWII by making it disappear-by lighting it up even more, by placing batteries of search lights along its whole length and cloaking the canal in blinding light- so that the canal became like the filament inside of a light bulb-impossible to see its exact location- and impossible for the German bombers to aim at.
But I dont see how this velcro thing is an example of that sorta thing.