This seems like it should raise questions though, if preemptively blowing out subreddits when the refugees of blown-out subreddits conglomerate there is what was indeed happening.MarsAtlas said:then Whale Watching was done pre-emptively before it turned into a sub for the refugees to do the exact same thing they did on the other two. [http://www.escapistmagazine.com/forums/read/18.876768-Reddit-Bans-Subreddits-about-Making-Fun-of-Fat-People-Neogaf-and-others?page=7#22062158]
What if those people mass-flood into a completely innocuous subreddit and the moderators can't keep up? Does the subreddit deserve deletion then?
Even if that's unlikely, if the problem was that the unpleasant subreddits were deleted because they were stepping out of their circle and harassing others, then destroying another subreddit they moved to before they could violate the same rules seems to be a REALLY drastic step. Seems like the more rational move would be to ban the users that are actually causing the harassment, rather than nuke any given subreddit they migrate to?