Since the BadUSB exploit is a MITM for data going through the USB interface, it's existence doesn't increase the risk. All the executable files could just be in

Since the BadUSB exploit is a MITM for data going through the USB interface, it's existence doesn't increase the risk. All the executable files could just be infected to start with. It's pretty much the worst idea to execute random files you find in the street anyway so the risk probably isn't that high in the first place.