I don't quite understand. Regardless of whether these coins are used for harvesting, it should mean that they exist, otherwise they cannot be used for harvesting. But why are they not shown in the statistics if they exist? Therefore, it makes more sense to me that the discrepancy between the 5.6 billion and 8.9 billion is due to the fact that these coins have not yet been claimed. But then the question arises, what happens to the coins that are not claimed? Could not find any info on this. Will they be burned, used for a development fund or for something else?
Symbol is not quite the same as NEM.. Not all XYM was minted at launch.. Think Bitcoin -- not all 21M exist yet. Each block produces more -- same with XYM.