On the European Central Bank's blog, the views expressed there are not (necessarily) the official position of the institution. The authors of the piece are writing in a personal capacity.
Of course, both of them do have an employment link with the bank. In fact, one of them is a director of an entity and the other is a consultant. So, while it is true that this is an opinion, we are talking about an expert opinion.
Therefore, it might be useful to reflect on what has been written. First of all. The news has gone viral. And the headline "ECB speaks" could confuse people. Many might believe that it is an official statement (and it is not).
I used the phrase ECB speaks, because that's how the news has been spread by the mainstream media. It is not the end of the world. What causes more noise is the authors' prophecy regarding the supposed irrelevance of Bitcoin after the collapse of FTX.
Thanks for reading, have an exciting and productive day.