This might sound good if you're living in the jungles of Belize. But let's be realistic. The average individual and small business owner cannot meet their day-to-day financial obligations by dealing only with unregulated counterparties that transact in crypto. And the vast majority of people do not wish to live a life where they're exchanging USBs for cash using crypto "plugs" they meet in fast food parking lots.

Furthermore, in the latter scenario, that cash is eventually going to get deposited back into a regulated institution (to pay credit card bills, etc.). If anything, a person depositing thousands of dollars in cash on a regular basis is going to draw more scrutiny, especially if they're not running a cash business.

Which leads to the obvious solution: you're going to buy that Wendy's where you're exchanging your USBs for cash. Congratulations. You're now officially a money launderer!