If you're worried about abuse on HN, like astroturfing and so on, please email us at [email protected] so we can look into it. That's also what the site guidelines ask you to do. Make sure to include specific links. I took a quick look at the commenter's history and didn't see the kind of thing you're talking about here, but it's always possible I missed something.

(I actually only posted a single comment in this thread. It seems like there are multiple people who are recommending the Ender :) )