It's probably more a problem to actually know whether they move or not. Rather than be surprised at fact of moving statues and scariness is in sudden surprise. They all were prepared for a monster battle not a puzzle trap.
What the point of not getting rid of mob and bosses of mafia? They will come back after him and his family after the initial treat. There no point to try and take organized crime group on fair ground or some "pact" they don't have to uphold. They pro criminals and not going to became behaved...