They are even louder than fuel burning cars over 50kph due to the extra weight. I would still rather hear loud tire noise than breathe exhaust as a pedestrian though
Obviously this applies to the ~average~ car. A hellcat or sports bike tearing down the highway will be louder but the consistent drone of tire noise increases slightly for electric cars.
I can hear ICE engines accelerating roaringly from miles away. I do not hear the same from electric cars.