What the bitcoin pundits never realise: You cant use any crypto coin as currency because its NOT a currency. Crypto coins are a digital commodity but with one purpose unlike gold or silver.
Firstly its not price stable. Eg: try running a business with complex inventory of parts to manufacture ANYTHING when your currency yo'yo's up and down. Suddenly what was put on back order just sent you bankrupt, how do you do standard markup pricing for your product? Its so push-pull price volatile you cant. ;-). It makes Zimbabwe an easy place to do business compared to running a business on a stock of crypto. Get over it will never be a replacement for a fiat currency zone.
Secondarily: What they also fail to admit is mining for that decentralized ledger in big Oh notation N factorial. 'Printing money' which happens when banks mark up the assets/liabilities side of a centralized balance sheet is Order 1 computationally complex.
No dancing around 'but governments are oh so corrupt' can distract from the fact that bitcoin by algorithmic design is an energy nightmare. Go on convince me that computing the first >=30 sub-string if a SHA256 with brute force is not going to be bad for the environment to write to a decentralized ledger versus having a db adhere to ACID + standard private/public key cryptography.
Bitcoin is behaving exactly like the gold mining industry. Mining gold is no longer people panning streams. Is complex geology, chemical engineering and massive amounts of energy on a macro-industrial scale to mine current gold supplies. There's nothing fundamental about it its messy.
Finally i'd like to have a government i can ELECT DEMOCRATICALLY rather than an UN-elected investment group, they all fail to realise all Crypto IS centrally controlled, very easy to change the algorithm on a crypto and send the coin into deflation, inflation, make the miners bankrupt. Obsolete their hardware playing with the yield function for mining.