surely there will be a very large shock in the public market. maybe I think it could cause a global panic for biitcoin owners. But Satoshi Nakamoto wouldn't do something stupid like that, there must be a bigger plan than worrying a lot of people just looking for a profit.
Definitely, the prices are going to plummet but the problem is what would satoshi get when he dumped all the bitcoins together because you can't just sell that if I am right, the prices is definitely going to plummet if the 1 million dump is going to happen.