https://news.ycombinator.com/newsguidelines.html
Comments like this are particularly bad because often, as in this case, people post corrective upvotes and then the now-inaccurate complaint lingers on like uncollected garbage.
https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...
You're right, of course, that a legit comment from a new user shouldn't be downvoted, but it's enough to make a corrective upvote yourself and move on; or, in egregious cases, let us know at hn@ycombinator.com so we can fix it.
(We detached this subthread from https://news.ycombinator.com/item?id=43778319.)