The BoA was a perk for people who supported the site with a paid subscription in years past. It doesn't look like it was ever very popular and the TinFoil Board, originally and more correctly known as the Politics and Religion Board, has pretty much taken over the place that the BoA originally filled. The TinFoil board is moderated, so not exactly as "anything goes" as the BoA was, but we still ignore a lot more than normal.
As for getting rid of the board, that is an Admin level task and entirely up to the site owners who don't really have a "hands on" approach and usually leave us to our own devices. As long as VS gets their ad revenue, they aren't too concerned about what happens on any of their forums.