Tether executives and Binance CEO Changpeng “CZ” Zhao worried that Sam Bankman-Fried (SBF), former FTX CEO, was attempting to destabilize the crypto market aiming to save the now-bankrupt exchange, according to reports on Dec. 9.
Messages seen by The Wall Street Journal of a Signal group chat named "Exchange coordination" reveals an argument between CZ and SBF on Nov. 10 about Tether's stablecoin USDT.