I wasn't suggesting that all topics must focus on tech, but that the majority of Hacker News users come from tech, and may therefore have an interest in the technical presentation of the submission.

My apologies if this was not clear.

I think that if users find technical aspects of an article a more interesting topic of discussion than the content, they should be free to discuss it in this forum.

I do not think that the guidelines should be updated to prohibit "off topic" criticism, as the parent comment suggested.