You can easily move the decimal like we do with bitcoin. The mathematics of starting an economic engine is more important than the brain crack idea that it will be used by literally everyone on the planet.
Plus, even bitcoin could move further than 8 decimal; the protocol allows it.
I France, in the 70's, we decided to divide any franc (our currency by then) by 100. 100 old france were worth 1 new franc. So it happens even in real life (
New franc)