Sounds like Usenet :)
RSS is probably easier to layer on top of those new fangled HTTP-over-P2P networks like IPFS.
Heck, I remember proposals for combining RSS and BitTorrent, so an RSS feed could be spread via BitTorrent, with incremental updates being applied, and with each entry containing BitTorrent magnet links. This was proposed as a distributed way to provide podcasts ("podcatching"). Not sure if it got implemented.