Because as you saw here, everyone just went with the heavy metal comments. It's self-perpetuating because they see other comments like that and it validates tha

Because as you saw here, everyone just went with the heavy metal comments. It's self-perpetuating because they see other comments like that and it validates that they are appropriate. Ideally there could have been one comment thread on that which people upvoted or added to, but there were multiple comments. I don't necessarily disagree with you, off-topic comments can be very fruitful at times, and the mods here often move off-topic comments to their own parent comment chain. At the end of the day though, we're here to discuss the actual content, no matter how much easier it is to criticize the title than to read the long article. (The system also has its own flaws: newer users don't have enough karma to downvote and they outnumber the more experienced portion of the community that could self-police)