I think their main concern still needs to be addressed. Namely how an asset with high volatility can be used as a currency.

Imagine trying to take a loan in BTC, you will have no idea how much it’s going to cost to repay.

For those that argue stating the high inflation with today's fiat, keep in mind that inflation only goes in one direction. While it certainly isn’t good, it is still more manageable as a currency than a volatile asset.

While runaway inflation may push people towards BTC. It is still more a storage of value than a usable currency.

The day a decentralized system figures out an answer to the volatility problem, is the day it replaces fiat.