The guidelines apply no matter the topic; if it weren't that way, there'd be no point having them. We're here for curious conversation. Curmudgeonliness, fulmination and generic tangents are specifically off-limits here, and berating someone over personal, lawful decisions about projects and investments breaks the first rule of HN comments, which is to be kind.
You judge it in your own world view, I do with mine. I kindly disagree, and don't agree I went off the rails of kindness with my comment.
Kindness doesn't mean we should only acclaim people, and only comments on what they are asking feedback on. That yes-man attitude is all but kind to my mind.
I'm human being, I can make errors, but recommending people to step back on what they do, I don't think it is an error in general; and I'm glad when people come to me and tell me to do so.
It's easy to be trapped into a narrow view (including for me, to be perfectly clear). Arbitrary self censorship won't help humanity to make progresses on that matter, that's a strong opinion of mine. I'm open to academic or other social studies that would support a different or even more nuanced account on the matter.