Well, no, because the value would flail around wildly. No sane person would do that. BTC crashes 10% in minutes, who would knowingly expose themselves to that k

Well, no, because the value would flail around wildly. No sane person would do that. BTC crashes 10% in minutes, who would knowingly expose themselves to that kind of forex risk for the few hours it takes to get the confirmations needed to feel comfortable? When one could instead liquidate their position in seconds, confirm the amount, and wire it to their recipient - free of charge often. Domestic wires are free on FTX but sending USDC-ETH to your own wallet costs $25. There's literally zero good reason for doing what you suggest.