It appears that when an article gets many hits at a time a paywall is triggered. So, the title is clickbaity, then it gets submitted to HN, a few people read it

It appears that when an article gets many hits at a time a paywall is triggered. So, the title is clickbaity, then it gets submitted to HN, a few people read it, then suddenly it's paywalled. Right. Moving on, nothing to see here.