While I don't necessarily disagree, I look at some of this in a different light....

While USD is a fiat, Constitutionally the government is banned from issuing fiat or deeming it legal tender. Unfortunately, that has been manipulated with corrupt court rulings long ago. Bankers will tell you it is not fiat, but instead backed with asset purchases of financial securities and federal bonds. Yet, financial securities are just buying fiat from other banks, and federal bonds are just buying rights to a loan someone made to the federal government.

The FED controls USD supply, is just private bankers pretending to be an objective authority, and isn't controlled by the government. Yet the government does the actual printing of USD, albeit at the FED's direction. The Constitution gives Congress control over regulating US currency, foreign currencies, securities, and anything like a currency in the US. Congress is therefore fully complicit in allowing the credit card companies, banks, and the FED's tyranny over the people. They likely allow it to continue by their beneficial collusion and to be lazy, as the FED preforms national currency duties that the Constitution demands of Congress.

Bitcoin is a new concept that doesn't fit old rules. It is a fiat, by being an un-backed vessel for wealth. Yet, it has intrinsic value through being really good at doing this; a vessel that can represent wealth, assets, or items, with an immutable value, high censorship resistance, some programmability such as contracts, that is permission-less, trust-less, pseudo-anonymous, and which can be transferred typically within seconds. It also facilities a modern green world financial solution, despite complaining of its energy usage for security being made by bankers from atop their sky scrapers, whom use a dozen office buildings and hundreds of physical banks, with tons of infrastructure to facilitate a database of accounts.

You only need to wait longer for higher security. For Bitcoin 10 minutes for at least one confirm is okay for regular sized amounts. Current credit card systems can't even do this. They transact in seconds... but actually take hours, days, or weeks to actually settle.

Blockchain analysis has proven very privacy destroying, despite the pseudo-anonymous design. This is mostly due to use of heavily surveilled fiat to purchase bitcoin, then redeem your wealth. You are de-anonymized at the fiat banks, then tracked end-to-end within the otherwise anonymous Bitcoin...actually, the surveillance of the Internet also allows a similar side-channel attack, that could possibly observe the IP address of nodes involved in replaying a memtable transaction.

The US government's own recent analysis of the possibility of a national digital currency, proclaimed the dire need of anonymity, despite the draconian attack of privacy cryptocurrencies. The US government loves to track and analyzer our every credit card purchase. It also desperately wants the ability to filter your international transactions, so it can enforce its xenophobic foreign sanctions.

These scary world bank plans are even worse. They require doxing members of every transaction, sharing their info with dozens of sketch countries, including name address dob, employment wages, and even life insurance policy value. Some of the plans want this shared with private, non-government, non-central-bank parties. Scary shit. Don't worry though, the US already pledged to do so.