It’s a good approach because their base is open to it. They are used to listening to that cadence and inflection with openness and willingness to swallow whatever poison is in the message, and that conditioning makes it so that the content doesn’t matter, only the delivery.
I doubt she even recognizes that she’s doing it too. She’s just used to authority with a microphone speaking this way and so she does it too. It’s exactly how I used to be before I got out.