Adam Back, CEO of Blockstream and HashCash, has said: "Nothing is above Bitcoin, no Central Bank Digital Currency, no stable coins."
He continued that: "I think that blockchains are more about permissionless, uncensorable usage and free market money. I think while it is possible and useful for some use cases, like crypto trading, to have stable coins, they inherently fall short of Bitcoin as they have custody risk, and if there is a central bank underwriting also traditional establishment interests reflected in the operation which may look unattractive to users."
Source:
https://cointelegraph.com/news/exclusive-nothing-is-above-bitcoin-no-cbdc-no-stablecoins-says-blockstream-ceo-adam-backyes that's true, especially if we see now that bitcoin has become a trend for people to adopt and bitcoin investment is now increasing which is likely because investors are now very interested in bitcoin to be used as protection for their assets because some of them are very confident that bitcoin will give them more profit compared to fiat currency, and now fiat currency investment has faded slowly because they are bored with governments that always collect taxes when they get a little money from investing in fiat money.