Giving you the other side of this: Podcasts was essentially a disk-space-leak made app, if you subscribed to any podcasts that you never actually listened to (but still listened to others, and therefore regularly opened the app.) It would just pile up new unplayed episodes forever, eventually taking up tens of GBs of space, on a device that doesn't have all that much space to spare.
Giving you the other side of this: Podcasts was essentially a disk-space-leak made app, if you subscribed to any podcasts that you never actually listened to (but still listened to others, and therefore regularly opened the app.) It would just pile up new unplayed episodes forever, eventually taking up tens of GBs of space, on a device that doesn't have all that much space to spare.