I don't understand your comment that clipless is safer.

Having a foot slip off a pedal can cause a cut and is a hazard to be sure. But it doesn't compare to the safety hazard of failing to get your shoe out of the clip when you have to stop right away or when you are in a collision.

If this isn't about efficiency or power, then it doesn't make sense to me. Platforms are more comfortable and safer, in that you are free to move your leg and you can put it down right away.