It all worked and I actually have this stuff built into a test version of MSP 2.0 (npub10z4…x7l3) even the nsite stuff. It's been a while since I worked on it but I think the issue was that you upload a rss feed to bloosm, get a hash for it and that's fine but make one change and reupload that feed and you get a new hash and then apps need to know what that new hash is.
RSS stuff is all built assuming your feeds url isn't going to change.
