Pretty accurate. Back in the day, bodies moving, three phones, one in each ear and one on the shoulder flipping back and forth while trying to input orders on the work station.
A year ago, I went to visit a friend who owns a MM B/D recently, went into the trading room. It was dark and quiet, could hear a pin drop, and the few bodies sitting there were just watching screens. Now outside the trading room, it was more dynamic.
Strange how times have changed with technology.