I hope I don’t ruin a good thing by calling attention to it, but this amazing shortcut shared by u/AnthropicMachine can transfer your Spotify-exclusive podcasts back into the Apple Podcasts app. Thankfully, only one of the shows I listen to moved to Spotify. I don’t use Spotify for anything else so now I can delete the app again.
Check It Out: Transfer Spotify-Exclusive Podcasts Back to Apple Podcasts