That's really for the admins to elaborate on if they wish - but there's a thread over there explaining the fallout https://raddle.me/f/meta/138290/r-anarchism-r-piracy-mod-decides-redfash-project-is-better
The short summary is that Raddle couldn't handle the influx of new signups while also dealing with spam issues (they closed new signups during that period). Also keep in mind Raddle's admin is anti Lemmy hence the reaction to /r/Piracy attempting a Lemmy move. All that aside the /f/Piracy community there still exists & probably would still serve as a smaller fallback IMO, certainly better than going back to Reddit.