[whywhywhywhy]

On the other hand Apple Music already has audio streaming and playback and a Library mode so should Podcasts write their own?

While yeah debundled separate apps will make probably the main use case of what was the bundled app better it also likely leads to stagnation and buggier experiences over time in the apps where the less popular features were debundled into.

Like all knowledge and talent required to code the Audiobooks app is the same as whats required to code the Music app so which team would you rather be on given the choice.