I'm invariably amused when my four year old gives up on "Alexa, play Justin Beaver on Spotify" and resorts to "Alexa, play whatever you want on Spotify", only to get back this:
The device and the service are fixed parts of the incantation (as heard), but the artist's name is not. This is the logical conclusion of that.
I suspect it's not about wanting to hear music as it is about exercising power. (As someone else commented here https://news.ycombinator.com/item?id=14375928)
Touche. I would absolutely do that.