So this was on the front page with 1302 points at time of writing, and now it's nowhere to be found... Is there a quirk with HN's algorithm that I'm not aware

So this was on the front page with 1302 points at time of writing, and now it's nowhere to be found... Is there a quirk with HN's algorithm that I'm not aware of, or is there something else afoot? A mass-flagging? A manual take-down of sorts?