Sarah the RSS feed is the life blood of podcasters. 85% of consumption is tied directly to the RSS feed. Over 90% for bigger shows.
I do agree though you should distribute everywhere. IHeartRadio, TuneIn, spotify, google play music, social media And have your own personal apps for your show in the iOS, android, and windows phone.
As a Podcaster today you should be able to say find my show everywhere except pandora.