Growing your podcast audience isn't just "a difficult task."
It would be an understatement deserving of public ridicule to say that growing a podcast's listenership is difficult. "Difficult" is too weak a word. Growing a podcast's listenership is so hard that out of 4M podcasts, only about 700K are still producing episodes with any regularity - that's an 82.5% dropout rate. That's not just difficult, it's bordering on damn near impossible.