I think an economist or analyst is well capable of commenting on what money is and what it is not and on the value of something. They would also have a good understanding of the history of bubbles.
I'm not questioning his background or credentials
as an economist. He was one of the few to call the 2008 U.S. housing bubble and subsequent crash.
However, that he doesn't see one redeeming feature in any cryptocurrency (as he's equally scathing as regards altcoins as he is in relation to Bitcoin) - that to me doesn't sound like a balanced viewpoint. In his twitter splurge pre-congress testimony, outside of the ranting there were three criticisms he presented with in relation to decentralisation;
1. Crypto exchanges are centralised.
Been discussed within the community. Nobody is denying the fact and nobody in the community likes it. However, where is the acknowledgement that
decentralised exchanges are emerging?
2. Lead developers have too much influence and so in this respect he claims there's centralisation.
Yes and no. Various models of governance have been applied in crypto - as newer projects experiment with different approaches. They're refining the model. Each version has it's drawbacks thus far. However, it's more than ironic that he specifically accused Vitalik Buterin on these grounds. Vitalik himself is
actively searching to improve upon current mechanisms!
3. That cryptocurrency miners are centralised. Again, in the case of Proof of Work (PoW) based coins, sure it's currently an issue. However, is there any acknowledgement that due to the equipment being used, this is changing? Does he know that this is not the case for all cryptocurrencies? Does he know that some crypto's don't involve commercial miners?
In relation to all three points, you say that he is qualified to speak to that - and whilst I agree generally, we're talking about the application of a technological solution. He doesn't come from a tech background. For the most part, the criticisms he has with regard to a lack of decentralisation in crypto ...that discussion with regard to whether that's the case and if that's the case how it can be addressed is a technical one. Not the purview of a top economist.
So Roubini was well qualified to testify that Bitcoin was a scam.
A couple of things on that. The word 'was' implicates past tense. Bitcoin is alive and well.
As regards scam, that's sensationalist verbiage used by Roubini to garner attention and it's inaccurate. Here's the definition of a scam;
scam
skam/
noun
INFORMAL
- 1.
a dishonest scheme; a fraud.
"an insurance scam"
synonyms: fraud, swindle, fraudulent scheme, racket, trick;
So if Bitcoin is a 'scam', who is it perpetrated by? A dishonest scheme has to have a fraudster behind it right - if it's supposed to be orchestrated?
I was surprised that he felt qualified to dismiss Blockchain. I doubt he has the expertise or understanding to do that.
For the very same reason, he's not as likely as you think to be best placed to assess cryptocurrency either i.e. it's technological in nature.