"That's our fear," the economist warned. "Since there is no authority, there is no room for more supply of money. So there is no mechanism to control when it collapses or goes up."
I guess that he fears that he will not be able to control Bitcoin as he can control fiat. If they are not able to control money they will not be able to have so much control of people...
We have been seeing this & similar headlines for years, and Bitcoin is still here, getting stronger every year. I can just repeat what we have been saying here on the forum for years, these kinds of headlines are just announce that the bull run is very close.