to break bitcoin?

According to Nouriel Roubini, professor of economics at New York University, bitcoin is "the mother of all bubbles" supported by "charlatans and swindlers," Angela Monaghan writes for The Guardian newspaper.
That's what some experts say, but all they say are attacks to discredit bitcoin and alcions, which worry governments because people do not trust their currencies issued by central banks. Which are bubbles economic
Almost all governments are implementing blockchain technology which comes from cryptocurrencies, they have noticed the great benefits and certainty that it offers but on the other hand they want to regulate, they are not congruent in making such acts and affirmations.