This week in the Cryptosphere: Vitalik Buterin said that high Ethereum fees might be gone even before ETH 2.0, and DeFi darling yearn.finance crashed 60% from its ATH, while Virgin Galactic Chairman said BTC can’t be correlated to traditional assets. TaoTao said it “ended negotiations” with Binance, and the SBI Group snapped up a controlling stake in TaoTao from Yahoo Japan. BitMEX crackdown