Presumably because the paywall is very porus. And, I suppose, there are a few HN people who have subscriptions. And probably a few who just upvote based on th

Presumably because the paywall is very porus. And, I suppose, there are a few HN people who have subscriptions. And probably a few who just upvote based on the title. (I think it only takes 4 up votes to hit the front page if they happen quickly enough.)