What board OP? Nothing showing up on 4plebs or desuarchive.
As for your question, I think anime as a whole attracts a lot of autistic, introverted, awkward people. /a/ posters are usually some of the worst I've had the displeasure of talking to (worse as in the most annoying/arrogant/smug/etc.), probably because the internet is all they have and creating artificial hierarchies on anonymous imageboards makes them feel better about their shitty lives. A lot of them are nofunz