That's not what I hear it says. The editor was asked what is next for the series. He said that what is about to happen is something that he would label as one of the 3 most horrific moments in the series.
I would imagine something like the scene with Pitou playing with Kite's head is what he is talking about.
This was in this week's issue. Instead of getting a chapter we got a summary by Togashi and his editor.When was this and which chapter is this referring to?
edit: Apparently the editor was talking about impactful moments, which some have translators have been changing to best and others to worst.