You'd have to figure out the zaps. With rss, lightning addresses are part of the metadata within the feed. At some point you're gonna need to figure out splits as well. Without the rss implementation,...
I doubt any rss feeds are embedded within nostr because if there are any edits, you 1) risk duplicating feeds again and 2) you cannot ensure users will ve served the latest updated files because you cant guarantee all relays have the most up to date info (we see this with user names and lnaddresses on regular nostr)