That is not the same. Rfid tracking / filtering is much easier and more precise than video. There is no need for computer vision or any kind of expensive comput

That is not the same. Rfid tracking / filtering is much easier and more precise than video. There is no need for computer vision or any kind of expensive computing. Also it is far easier to abuse by evil civilians. Consider the overhead of installing a high enough quality video camera on a public road for a criminal compared to an Rfid reader.