60% of users Tap to Pay by facing the iPhone screen away from them

So I work in the food industry and I watch people tap to pay a lot. But one thing I’ve noticed happens with the majority of users is that they think they need to face the iPhone screen/front camera towards the pin pad.. I’m just curious why do they do this? Where did they see that this is the route to go? Just seems highly comical that the majority of people do it this way.. Has anyone else noticed this?