> The article title includes "the secret City of London." Without clarification, it's left to readers to decide what that means.
Generally speaking the etiquette on HN is to at least pretend that you've read the article. I've rarely seen someone so audaciously using the fact that they didn't read the article as a defense.
Whether or not there's an etiquette for HN, there's definitely guidelines for HN which among other things encourage commenters not to accuse each other of not reading the articles, and to give each other the benefit of the doubt.
As it happens, I did read the article before writing my first comment. That would be the article which uses the word "secret" in its title but neither "secret" nor "secrecy" anywhere else in the body. Put another way, having actually read the article, among the many interesting things it says, one thing I know it doesn't say is exactly what it means by its title
Generally speaking the etiquette on HN is to at least pretend that you've read the article. I've rarely seen someone so audaciously using the fact that they didn't read the article as a defense.