You aren't applying Occam's razor. The simple explanation is that this is the most relevant HN story in recent memory. It involves a startup, it involves a YC company, it's one of the most valuable startups in the site owner's portfolio, it's an international print news story, it involves tragedy, and the outcome will make us all think about what it means to be a successful start up.
That's why the stories all have traction. It's a fantasy to think it's an irrational mob.
Edit: I should say I see neither the respondents nor the upvoters as an angry mob.