It’s crazy that there aren’t better tools for paid podcasts.
Chapo and C*town provide 2 RSS feeds. The free/paid feeds don’t show up next to each other in your podcast app because they’re named differently (dumb). No way to merge feeds in the popular podcast apps.
Smart producers like Stratechery/Dithering provide individual personal RSS feeds that combine the free and paid. And deliver only the free if your subscription lapses. But those are one-off CMSs that most Patreon podcasts don’t have the means to deploy.