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> with a digital currency, they can simply zap your money away.

Brazil did that in the 90s, digital currency wasn't needed.

Yes, but with an open, global system like bitcoin, they can't do this any longer.

Central banks kept printing money despite the existence of blockchains. There is an ongoing global inflation crisis as result.

It seems no Blockchain was able to overcome fundamental scalability issues, which are key to actual adoption.