I am not sure it is necessarily people growing wearier of phones. It is kind of a mix of gen z's weird nostalgia for things they never grew up with and the proliferation of AI music. I have a hard time trusting random playlists on music services because I don't know if it is genuinely new music made by real people, or ai the platform is pushing so they can make more money. Either way I don't want to be part of that. I don't personally own one of these devices but my listening habits have changed quite a bit in the last year.