Why not? Not having it turned on by default, I understand and agree with. But if it was in the Settings as a controllable option, the funtions in shortcutd make a lot of sense. The problems that people have with the vibration feedback and the proximity sensor just indicate proper default settings. Clearly some people (the developers) think that the proximity sensor is a useful way to trigger this behaviour, so it should be available--but not enabled by default.