I think the second line is touching on something. The implication is that there may be a kind of legal cross-nation counterfeiting happening. Stablecoins likely play a part. When I worked in crypto back in 2017, all the successful people would tell me that they thought there was something really wrong with Tether and they all believed it was propping up Bitcoin. They expected it to collapse any day... But here we are 8 years later.

Ideally, countries should only be allowed to issue their own currency. It's not hard to see why a country being able to print another country's currency would pose a problem... With all money being digital and stored on thousands of distinct bank ledgers which basically don't have consensus, it would be very difficult to track with manual audits and with the current incentives in place. It would be trivial to hide these transactions under legitimate names as various forms of international payments.