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.
How can a guy who suggested to re-org the Bitcoin blockchain be satoshi?
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,
Best exchange, from what angle exactly... this is subjective. Every top exchange has such kinds of wallets anyway, hot and cold. I don't know why this address is even raising eyebrows.