The podcast2.0 apps already support keysend streaming and many listeners already have a proper wallet attached to their podcasting app. RSS feeds already have fields with custom tlv values published by podcasters so that apps knew how to send. If mint supported accepting keysend podcasters would just update their RSS feeds with mint node pubkey and lock pubkey tlv and all podcasting apps would know how to stream.

Buy ecash and stream is much simpler but would require a dozen apps to upgrade which is not realistic.