Be careful of headlines.

He said his daughter bought bitcoin.
It might go to $100,000 before it goes down.
The reason why it is a fraud, is governments like to form and control currencies.
They like to know who has it, where it is going.
China is closing down exchanges.
He says governments see it as a novelty. (What this means is like obamacare, they will vote it down 20 times, but when they get in power all of a sudden they can't kill it.  Too look cool to kids the USA government will say they support it, however if it ever becomes a threat it will be gone).
However, he asserts the USA government will close it down.
He says it is good to use in North Korea or Venezuela.

Fraud is something CNBC tried to make him say imho.  But it may have been on his twitter?  Or CNBCs twitter?

BTW, the USA used a foreign currency when it was young.  

BTW he said the said thing in January, 2016.