To expand on that a bit: in practice you need a (semi)custodial lightning wallet as a listener anyway, because otherwise you're going to run out of battery on your podcast walk. Who then know what you're listening to and when.

As a podcaster you can self host, but - especially with splits - you'll miss out on some of the payments due to routing issues.

If instead you can post (pubkey locked) e-cash tokens somewhere, that's probably easy enough for a podcast client to support and hardly requires bandwidth.