Its the parent who is clearly marketing different product in multiple comments around the thread. I was just annoyed that i had to read thrid comment about how great differend product is
If you're worried about abuse on HN, like astroturfing and so on, please email us at hn@ycombinator.com 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.