How come patiently explain things to a device with no ability to learn in order to get the desired outcome for a particular question, that may not work again tomorrow, is a "prompt engineer", but the same thing with humans is a "special ed teacher" or "memory care assistant"?

The browser on the ancient Kindle Fire is no longer running GrumpyPlayer. What's the current state of "play digital music" devices? Preferred is attach to my WiFi, let it get files via HTTP or something, second is copy media to the device or an SD card. Last is a Plex or similar server.