I'm obviously not a Moderator, but I would assume it was deleted because it became nothing but a trolling war. Anyone on any side that had any opinion was immediately attacked for said opinion, and it spiraled into petty bickering and insults. It ultimately became a "trash" thread where the Moderators would toss any thread about content updates, further promoting the chaos in there.

Then again, they let it survive for so long as such, so it's quite likely that I'm way off-base here.