It’s all bullshit marketing until someone is accepting payments for goods priced in crypto.
Cryptos are extremely volatile. That's not possible until that changes.
You can reduce it to 0 by shorting Bitcoin futures contracts. You can make it even more volatile if you want. You can change the multiplier on base price change i.e. volatility to be any number between -300% and 300% of its base rate(the caps depend on margin requirement), with appropriate setup.
That's for Bitcoin, but you can do other cryptocurrencies indirectly.
And these are government-regulated contracts, marked-to-market daily.