What's wrong with Long castle in accelerated Dragon being white? What's wrong if white move to Castle long(0-0-0) in Accelerated dragon?
In the normal Dragon, the most dangerous system is the Yugoslav attack.  Current theory shows that Black can resist the attack with a pawn sacrifice and maintain the balance.  In the Accelerated Dragon, Black saves a move by moving the d pawn to d5 in one move.  This allows Black to gain a dangerous initiative.  With a Rook on the c file and the Bishops on g7 and f5, White must defend carefully.