It is the lack of transparency around the CP that is raising eyebrows. Why can't Tether list the papers they are invested in? It is such a simple thing to do.
Could be all their CP holdings are in one company :)
What do you think backs bank deposits?
Something backed by commercial paper is by definition backed.
Maybe a better way to say it would have been that banks are safer because they're backed by the government including FDIC, bailouts, regulations, oversight, etc.
FDIC doesn't prevent runs on banks. It only pays out after a bank is declared insolvent and there's nobody willing to buy the bank.
Banks are regulated for good reasons which make them safer. But at the end of the day banks are in the business of transmuting unsafe long term debt into safe demand deposits.
Commercial paper is not dollars, so tether effectively admits it is not backed. The risk of default on commercial paper is huge compared to dollars held in reputable banks' accounts.