CZ has said a lot of things that aren't true, because telling the truth about committing crimes is tantamount to confession. I can point you to more than one user on Steem right now that has posted their personal communications with Binance to get their money that Binance refused to provide with 'wallet maintenance' excuses.

The claims that no customers have been denied their funds is factually incorrect. CZ knows that and knew it before he claimed otherwise, which makes that claim a lie.