Yep, as soon as incumbent (soon to be legacy) financial system notices innovation that cuts any fellow gang member out of their respective monopoly, they all start throwing around perjoritives such as "scam", "criminals", "terrorists" etc.
The problem, of course, is that the only concrete evidence in existence condemns central banks, consumer banks & the financial markets of these slurs. Even when cryptocurrencies do see some (any) actual proven cases of these accusations, it's difficult to see how the financial system could ever claim to be somehow less guilty of the exact same legal infractions.