Earlier quoted context omitted.
> Banks have like 10% or even less… That’s completely untrue, and Tether isn’t a bank.
Yeah, banks hold much less than 10%, as of 2020 the reserve requirement is 0%.
In contrast, Tether has historically admitted to having as little as $100.20 in assets per $100 in liabilities [0], with a significant fraction of it in crypto and other assets that effectively wouldn't even count toward banks' capital requirements. It has probably dropped below $100 in assets per $100 in liabilities - i.e., been insolvent - at some point, and even taking its latest audit [1] at face value, it has far less capital than would be needed for a bank with the same asset profile in the US or other developed countries.
[0] https://assets.ctfassets.net/vyse88cgwfbl/1np5dpcwuHrWJ4AgUg...
[1] https://assets.ctfassets.net/vyse88cgwfbl/6h4YWqZOXbwtBaPtYg...