Well the US Dollar is 4 syllables and even the brief form USD is three. So much for that theory. In Japan the "yen" is pretty unique and only one syllable. I asked my 10 year old and she knew what milli and micro meant. Japanese education includes that at least.
For trading you can just use Bitcoin. The other forms are for shopping.
Oh and Japan is amongst the world leaders in money and innovations. In fact Europe is too. Although the US might be the undisputed king of McJobs that don't pay enough to live on. Maybe "Mc" should be a unit?
Wow butthurt much? Silicon valley is the world center of IT innovations, whether you agree with that or not.
Also, Dollar is 2 syllables. I've never been to USA, but I do not think that in shop you can often hear: "This will be 2 US Dollars" unless you live at the Canada border.