It doesn't matter to me how many of those belong to one owner. The important thing I guess is we see that there's 1M wallets that have been filled with 1 BTC and all of them are holding. While it's estimated that satoshi has got 1M supply and that will never be recovered. We can think of how many of these are no longer in circulation while these 1 btc's that are in these wallets, this only simplifies  that many have been taking care even of themselves and hold at least even 1 btc.