Indeed, this is worth celebrating; in every bullish and bearish market, there is always a change of ownership among Bitcoin holders. Most people see the bull run as an opportunity to sell off all their holdings, which is why there will always be others willing to buy and bag up more. This 1 million address holds at least 1 bitcoin. There could still be possible holders out there whose holdings are not being recorded because they might be holding their coins on a centralized platform where all their holdings are recorded as part of the exchange's own until they withdraw them to their personal wallet.
I believe after the halving, we might as well see an increase in the amount of wallets holding more, even above 1 bitcoin.