Not sure what you're on about. The article itself states they're typically 1mm to 2.3cm in length, and most of them that I've ever seen are closer to the 2cm than 1mm. Probably helps that just about anything 1mm in size looks about the same from a normal viewing distance, so there's reason to believe most people would have seen more from the bigger end of the spectrum.
Regardless of the size I quite like them, many are quite pretty and fascinating to watch.
