There's really nothing to gain from nay-saying a new space like this, tbh. Much better to take the attitude of "hmm, I'm skeptical, but let's see where this goes, let me try it a bit, someone convince me why X is useful." Because if you're wrong, you'll find out sooner.
Dismissing a new technology is not helpful. But I think it's valuable for people that understand the tech to debunk proposed uses of technology that are not things the tech actually does. This is closer to how I see the article.
In what I see as the current big 3 - quantum computing, AI, and blockchain - there is a parallel imaginary business world claiming things they can do that at best are misunderstandings and at worst are effectively scams to get consulting money. People who understood what the tech is actually doing should not shy away from clarifying what it does and make it harder for the snake oil salesmen to do their thing.
And when I see the discussions about Blockchain in the general public nobody asks for proof for statements like "It creates trust. It's safe, it's the future, etc ...".
So by taking a rather radical stance ("it will not revolutionize anything") you at least create a counter narrative.
Can you expand on use cases? Just interested