The legend says that he (or she??) has lost his coins or the keys so the dumping could only be theoretical. But, anyway, if it happens I will buy them all.
Really??? A computer scientist with enough intelligence to build a cryptocurrency from scratch doesn't know how to make backups, I find that unlikely!
I mean he might have destroyed them so no one steals them but not lost them accidentally.
He is the inventor of Bitcoins and Bitcoins growth is in his interest, so I don't think I will contibute to anything that will bring bitcoin down by dumping his shares in it to make it worthless.
But why not? If you'd made a project and you could make $1bn from it, would you also not sell and sit holding your private keys intead postulating anything you could actually do with them.