I don't think he has any in-depth knowledge about cryptocurrency, bitcoin, and blockchain and I think he can't even distinguished the difference between the three. And if there is anything that could stop cryptocurrencies, that is not going to be government agencies. I think as long as there are a lot of people who are going to benefit from it, there is no such thing as possibility.
Nope. He is very knowledgeable about these. He has decades of experience in investing on various assets and currently he is the chairman of Rogers Holdings and Beeland Interests Inc. In the past also, he has made several statements regarding cryptocurrency. But that doesn't mean that we should always agree with his assumptions and predictions.