The article is something known as "a blog post" with a bunch of words known as "an opinion". It's not a thorough economic analysis from an economist using validated data sources and empirical research backed by strict scientific rigor that passes all peer review but can't be repeated.

Are we not supposed to pass judgement on a blog post just because it's opinion-based? If I put the most nonsensical opinions into my blog post, I hope people tell me that it's not very good.

I don't disagree, but I also don't think that gives the article a pass to make whatever claims they want without getting any pushback. Especially where they posted it to HN, they should be expecting to be challenged. I could (and probably should) have been nicer instead of calling it "terrible", but I don't think we (a site like HN dedicated to intellectual curiosity) should give bad claims a pass just because they are "opinion." We don't let journalists make unsubstantiated factual claims that are self-contradictory just because they listed it under the "opinion" section of the paper/site, and I don't think we should have different standards for a self-published piece. I'm not advocating censoring it or taking it down, I'm just critiquing it.

Parent commenter presents perfect arguments to show this opinion or whatever it is is based on questionable grounds