Ask HN: How can a single person objecting get a post moved from the front page?

Recently, when a single person vehemently objects to a post, it disappears off the front page.

Liken a submission to Reddit, or call it over-hyped, and it's a goner.

I've noticed this trend recently, and it just happened with one of my submissions:

https://news.ycombinator.com/item?id=5684770

Or do votes not count any more?

(I have a feeling this may mysteriously disappear)