Umm no you can't. Hacker News comments are not considered reliable sources [0] because they are self-published [1]. The only exceptions would be if the subject of the article is talking about themselves, or if the commenter is an established subject expert. (Not meaning that they have a degree in it or are good at their job, but are widely considered an expert such as Dennis Ritchie on C) Even then the former is only meant for specific cases [2] and higher quality sources are always preferred. If any average joe could talk on a topic and include their opinion in Wikipedia because it was "published", it would not be the high quality resource it is today and that is also why the concept of what makes a reliable source isn't so intuitive.

[0]: https://en.wikipedia.org/wiki/WP:Rs

[1]: https://en.wikipedia.org/wiki/WP:SPS

[2]: https://en.wikipedia.org/wiki/WP:SELFPUB