Appreciate your interest
Yes, it’s certainly beyond me, slightly worrying, hopefully it’s just just down to an old encryption method that’s no longer used
What the point of keeping all of it of you can never spend it?
With such whale, even if it sells and crash the market by 80%, it's still a massive profit and can be reinvest in other assets and back to BTC at lower price and over a long bear market.
But I also think it will not be sold but officially moved to the tresury of a newly created company or something.
And if Satoshi is behind it, for what we know he could have kept a few thousands to live an easy life under the radar, just to suddendly come back in 1 or 2 decade, once Bitcoin is adopted enough and too later to roll back to fiat and instantly claim himself leader of the new Bitcoin world.