This theme is treated several times in this forum and you can find t many threads or posts regarding it. Anyhow, you are totally wrong. A commercial bank (like the banks mentioned in the article or by you) have any right to create/stamp any kind of currency. So even every such bank will want to do this thing that you mention cannot do it because is against the law. The right to create money have only a Central Bank or an Authority which have this kind of duty but with another name (for example Federal Reserve).

As for the above article the banks want to implement the technology from which is created bitcoin and in which is based the build of blockchain. Named peer to peer (if you don't know it). This a disruptive technology which cut excessively the costs of every kind of technology which replace. The field of its application are unimaginable and depends only from the imagination of the human kind.