alt Hacker NewsThis comment is simply stating historical facts. It's not unsubstantive. The actions of the US military in this particular case are relevant to this story. The atomic bombings of Hiroshima and Nagasaki during World War II caused an estimated 140,000 deaths in Hiroshima and 74,000 in Nagasaki by the end of 1945, according to some sources.
Your comment was (1) obvious, (2) inflammatory because of the context and the fact that it added zero extra information, and (3) snarky because of the internet trope you added ("our friendly reminder"). That means it was both unsubstantive and flamebait, even though it mentioned a fact.
Also, your account has been posting comments like this a lot, where by "like this" I mean low-information and high-inflammation. This is not what HN is for and undermines what it is for, so it you could please stop this, we'd appreciate it. You're still welcome to make your substantive points thoughtfully, of course, but it you'd please review https://news.ycombinator.com/newsguidelines.html and stick to the rules (such as avoiding snark and flamebait), we'd appreciate it.