I checked the history of the user who left that comment; it shows recent posts about crypto, too. That's thirteen years of following the subject.
The claim in the parent post, roughly, is that the HN community is clueless about crypto and economics. In reality, HN had a large hand in popularizing crypto, and criticism here often is based on experience rather than ignorance.
> Well this is an exceptionally cute idea, but there is absolutely no way that anyone is going to have any faith in this currency.