None of the ancestor comments are in the spirit of HN. They're much closer to the kind of comments found on Reddit.
See:
"The most important principle on HN, though, is to make thoughtful comments. Thoughtful in both senses: both civil and substantial.
The test for substance is a lot like it is for links. Does your comment teach us anything? There are two ways to do that: by pointing out some consideration that hadn't previously been mentioned, and by giving more information about the topic, perhaps from personal experience."
http://ycombinator.com/newswelcome.html