Exchanges almost always have large amounts of stable coin, and no limit on withdrawing them. It makes it so easy to get large amounts of cash equivalents out o

Exchanges almost always have large amounts of stable coin, and no limit on withdrawing them. It makes it so easy to get large amounts of cash equivalents out of an exchange and then launder them though mixers (even laundering it though the deposit wallets of other exchanges would obscure the path long enough for them to covert it to real cash). An attacker can deposit coins, trade it for USDT and have it deposited in another exchange before they even reveal the 51% attack.