It’s actually still a bit tedious on the Apple ecosystem. On the web (Safari) you have to wrap it in a WEBM or CAF container, and on iOS it’s similar. That’s a lossless process, but it’s still not the OPUS container
Especially in podcasts where it's just voice the savings in storage and traffic are significant. My own listening preference is 32kbits opus at ~1/4th size of the original 128kbits mp3.