I don't understand this reaction. If the thread had several posts from green users like these, maybe it would be appropriate to jump to this conclusion.
A more charitable explanation that I also consider to be likely is that jbHawk was a long-time HN reader who simply never felt the need to have an account until this post about a pretty neat tool which inspired them to comment.
Im such a user. Sometimes I feel the urge to comment, but it happens so rarely that I won't recall my username or password. So I probably have 20 accounts on HN and 40 on Reddit, each with just a few posts.
