If they Plan to kill and drop the USA dollar then why they work with so many USA dollar based stable coins like usdc thether and pax....
Stablecoins haven't got any plans to kill the USD. Neither have normal cryptocurrencies.
The aim of stablecoins is to surf on the popularity of the USD and to pretend that their coin is just the digital version of the USD.
As soon as the Americans create their own digital version of the USD, stablecoins will all die.