It is, in reality, just paying for a separate line, nothing else. It is not a more convenient or even different security process, as precheck tries to be, it is

It is, in reality, just paying for a separate line, nothing else. It is not a more convenient or even different security process, as precheck tries to be, it is just a more consistently short line to get to that process. The entire identity verification aspect is nonsense, and everyone knows it is nonsense. It is arguably slower than just showing an agent my passport. I agree that it makes little sense, and doesn't seem like it should be allowed, but for some reason, the airports in the US have decided that paid priority security lines should be outsourced to a for-profit private intermediary offering a nonsense security service.