Not so much killed as being rolled into YouTube Music
A fate worse than death. (Joke but I was a heavy Google Music user before it suffered the same fate).
The forced deathmarch to YouTube Music and its advertisement hell was a massive "fuck you" for trusting Google to at least not be assholes if you're buying items from them. I had a huge library of music purchased on Play and nothing worked to backup/download them. All the purchases disappeared in YouTube Music. Google "support" with the issues was... exactly what you would expect.
I didn't get into podcasts until a few years ago during the pandemic. But I refused to ever consider touching Google Podcasts. On the one hand with Google you know the entity you're dealing with so there's a certain ease that the name has vs trusting a different company. But increasingly it's just not worth it. They're like an elephant grazing on the savanna and you're a dung beetle. You can often find that Google shit is usable and useful, but they won't even notice if they step on you. I avoid Google if I can avoid it.