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)

an0malous 2 hours ago | parent | next [-]

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

▲

_fw 2 hours ago | parent | prev [-]

Afaik flagging acts like a super-downvote as far as the algorithm is concerned

	▲	pranshuchittora 43 minutes ago \| parent [-]
		Yes flagging is super downvote