Of course the wallets used by the owner, team, or friends of Satoshi have access until recently. They keep their private keys well, or their Bitcoin core backups are safe. I assume that they forgot the data they have backed up, because the device they use to operate Bitcoin is not just one. I'm sure they don't use work computers to store data, but data is stored on external hardware.
If they know the Bitcoin data, why don't they sell during the Bitcoin bull run? It's simple logic. We know the Satoshi team rules the crypto market, they know when a bull run is going on, and when it's a bear market.