WTH Why isn't the "confirmation" subkey for "tap_action" available in the UI editor?

Why isn’t the ‘confirmation’ key for ‘tap_action’ available in the GUI?

ex:

type: grid
cards:
  - type: heading
    heading_style: subtitle
    badges:
      - type: entity
        show_state: false
        show_icon: true
        entity: binary_sensor.bluetooth_state
        tap_action:
          action: perform-action
          perform_action: script.toggle_bluetooth
          target: {}
          confirmation:
            text: Are you sure you want to toggle the bluetooth?