Lack of context IMHO. The issue is controversial and the post is acting like it isn't.
So now hard facts are considered controversial?
If there was a thread about a mass shooting in the US, and a non-American asked something like "people in the US are allowed to own assault rifles?!?" and someone answered with the literal text of the 2th amendment and no other explanation, would you think that's a good comment?
Yes, I think it is a good comment because it answers the question exactly to the point. However, if there is an implied question as to 'why' people should be able to own arms, then of course it's better to elaborate further.
Welcome to HN, my friend. People here self-claim to be of high intellectual standards and follow facts. But what I see is a network embroiled in degeneracy. Unfortunate.