Call me sceptical but this Blockchain hype is reaching craziness. There seems nothing "distributed" about the mining activities in many examples I have heard of

Call me sceptical but this Blockchain hype is reaching craziness. There seems nothing "distributed" about the mining activities in many examples I have heard of, case in point is this article, which totally undermines the legitimacy of the blockchain they are running in the first instance. If there are very few participants mining then I truly wonder why people don't just write a basic ledger. The over complication associated with blockchain is horrendous if all you need to do is manage debits and credits. It would also be a lot easier to support, as the pool of genuine blockchain specialists to hire from isn't exactly large.