Worse yet, at least in Somerville and the general Boston area, I'm seeing touch-sensitive buttons instead of physical buttons that depress--with no haptic feedback; and only some of them play a recorded "Wait" when you press.
I'm gradually training myself not to jam my finger painfully against them to be "sure" I pressed.
If it turns out they're also placebos, I think I'm just going to give one a good kick next time I go by...