Binance will continue it's operation, it's just like any other companies out there, when someone steps down as the CEO another one will replace that seat. Binance right now is too big to crash so it's not something we should worry about, what we should be worried about is the new CEO, how will he handle the next generation for Binance and will he be continuing what CZ has started but didn't finish?
Truly a well established and reputable exchange like Binance can't wind up just because their CZ is stepping down, definitely nothing changes except the leadership of the exchange, of course another competent CEO would take over the affair of the exchange thus there shouldn't be any cause to panick Moreso the outgoing CEO would still have some input directly or directly to the exchange when call upon, I am sure his exit won't affect price of Bitcoin or BnB because I am not expecting massive withdrawal of cryptos rising from the exit of CEO because most traders keep only their trading assets with Binance