Regarding the article in post no 1https://protradingresearch.com/2017/12/14/one-bank-believes-it-found-the-identity-of-who-is-propping-up-the-bitcoin-market/
I think it is fair but not more than that.
If you look at https://coinmarketcap.com/exchanges/volume/24-hour/
then JPY is not that big a deal today as it used to be. Now Korea seems to be a much bigger player than Japan.
'Cryptocurrency such as Bitcoin that have pure distributed systems do not have an underlying value like precious metals. Value is not guaranteed by an issuer because there is no issuer.'
You could say this is true but this is also true when stated about the national currencies in Zimbabwe, Venezuela etc.
So saying bitcoin has no value whatsoever is false.
The main problem now is people are looking too much at the price than building something that actually works and is good for people.
BTC lately has enormous fees and is slower than SEPA EUR transfers so the utility of it is getting close to 0%.
Also regarding FX then the main problem in fiat currency systems is the debt tied to it - which will never disappear in a million years. No matter which politician promises to eradicate it.
Painting something as 100% bad or good as the media tries so hard to do, is one of the most unintelligent things I have encountered so far and articles that do not cover all bases belong in the dustbin.
The thing about cryptocurrencies in general is that a lot of people with libertarian stances are getting a chance to show whether something like this can work without a centralized issuer that can intervene etc.
The central bank system is fine but 0% interest forever is not healthy + the debt is enormous + it is controlled by politicians which are out-of-touch with everyday-Joe's issues.
BTC will probably be the start of the next financial crisis but so it is in capitalist systems with their boom-and-bust cycles that go on forever.
BitUSD is a cryptocurrency that tries to solve the 'stable' currency problem.