https://www.coindesk.com/markets/2019/12/06/four-insights-on-crypto-liquidity-from-binance-us-and-ftx/

https://decrypt.co/57950/ftx-review-a-crypto-derivatives-exchange-for-seasoned-traders

They despise it now, but only after being fooled. There is a reason for its "success". Bitcoiners were there too.