Since Android 7, I think, Bluetooth scanning has been available without having Bluetooth turned on. But Tasker still requires Bluetooth to be turned on for Bluetooth near to work. This is similar to WiFi scanning without WiFi turned on, and Tasker does take advantage of this for WiFi near. It would be really useful if Tasker would receive support for Bluetooth scanning, so that Bluetooth could remain off when not in use. This would also eliminate the need for the toggle Bluetooth option in Bluetooth near for those using a supported Android version.