you don't have to be Satoshi Nakamoto to own 1 million bitcoin, not to mention that Satoshi owning 1 million is something of an estimate and is debatable.

in any case OP is the only one who is making this claim so far! and it is a very strange one at that. not just because of debates about whether he is satoshi or not or if he even has that much bitcoin to dump. but because WHY would he even do that now! he is releasing an altcoin soon and every idiot on the planet knows if bitcoin goes down altcoins get dumped hard.

not to mention that a bitcoin price drop at this point triggers a massive scale FOMO buy of bitcoin and to do that people have to pull their money from altcoins. in other words if bitcoin drops, people rush to bitcoin and his altcoin fails in its first day