I don't think CZ is Satoshi because if he really is in one way or the other he would have revealed himself in one of his talks.
When it comes to the supposed wallet with that huge amount of Bitcoin, it shouldn't be a surprise to anyone because Binance is the best exchange, Crypto Whales can use Binance for transactions and also it could also be CZ/Binance bitcoin wallet address. In anyway the deposit or withdrawal of this BTC have not caused anyone any harm, so we are good and fine.