It's clearly heavily down voted, just look at when it was added, how many points it has and its relative position.
You cant downvote HN posts (comments you can)
They presumably meant that it’s been downranked relative to what you’d expect from a post with that many upvotes in that short of a time frame. Hundreds of upvotes in a few hours is usually a top 5 post
Afaik flagging acts like a super-downvote as far as the algorithm is concerned
Yes flagging is super downvote
You cant downvote HN posts (comments you can)
They presumably meant that it’s been downranked relative to what you’d expect from a post with that many upvotes in that short of a time frame. Hundreds of upvotes in a few hours is usually a top 5 post
Afaik flagging acts like a super-downvote as far as the algorithm is concerned
Yes flagging is super downvote