You know this outlet baloney started years ago, but it wasn't the cryo treated plugs that swayed the audiophiles, they didn't exist. What had them salivating were the orange "hospital" grade outlets, the reason being they had to be extra stout so Aunt Jinny's (the billionaire) life support wouldn't be "accidentally" unplugged by a clumsy relative or nurse. These orange outlets were the precursor to the exotic ones of today.
Good marketing can do wonders.