Because he was concerned they were insolvent and were using customer funds to cover trading losses and buy penthouses.
Turns out they were insolvent and using customer funds to cover trading losses and buying penthouses.
Unless CZ held a gun to SBFs head and made him lever up, lose billions then double down, take customer funds to the casino and try to win back $10billion then its kinda hard to blame CZ.
As a third party observer his responses were just absolutely baffling. Whenever blame was pointed at Sam he seemed to say some variation "we need more data" or "we need <my brand> of regulation" or deflecting to Binance/CZ while not giving Binance the same benefit of "we need more data" that he gave to Sam.
I've come to question if O'Leary is to SBF as Jeffry Picower was to Madoff. An entity who perhaps secretly knew but can never be proven to know and just looks like another victim.