Because a very large majority of the people here bitch for a variety of reasons. "I want an entire board for visual novels;" "I want a board dedicated to figures;" "Give us an /aa/." These are all things people have whined incessantly about for the past few months, even though there isn't enough content for a figure board, visual novel board, or any specialized board for things that were perfectly fine on /a/ in the first place. All of this bitching, combined with people complaining about ronery threads (which aren't allowed in the first place) being deleted, and the Utawarerumono release which caused a ton of useless threads on /a/, led to the shit we're in now.
The faggotry happened to come to a crescendo when moot was on, so here we are.