So what do you think went wrong with this trial of Germany's Central Bank using the blockchain technology? Maybe the whole process was not conducted as it should be that is it failed miserably...or maybe this is just a bluff especially coming from a centralized banking organization?
Nothing went wrong, blockchain is just like they describe. People were only saying "blockchain, not Bitcoin" to ride the hype while trying to hurt Bitcoin, but at least these guys have the honesty of trying before talking, and publishing their results.
And it's very tinfoily to think that a central bank would want to kill blockchain, there's no reason for them to do it, they are just regulators and this is just a technology, they could easily regulate it if it went mainstream, maybe it would even make their life easier, because it's a permanent and immutable record of all transactions that happen on a network.