Satoshis coin are forever a dark cloud hanging over the markest, I think he deserves his fortune but it is what it is, like any coin with premine or instamine these coin could be dumped at any time, we can't ever be sure if he still has the private keys or someone else is or will be in possession of them and will ever move or dump the coins, it is an eternal state of uncertainty.
Satoshi's 'Sword of Damocles' coins may help discourage or tamp down irrational exuberance, perhaps making price growth less speculative and more solid.
In any case, the overwrought FUD about them ignores how antifragility works. IE, they will either kill Bitcoin or make it stronger. And they aren't going to kill Bitcoin, so....
