Yesterday I was going through all the links in BBC, CNN, Guardian RSS stored during time of pandemic, for research purposes. I downloaded archived RSS files in archive.org, like for http://feeds.bbci.co.uk/news/rss.xml. Unfortunately I have noticed that some days are missing in the archive.org.
I think it is a good idea, if you have a favorite site, which has a RSS source, to make a call to store it regularly in archive.org for 'the next generations'. https://help.archive.org/help/save-pages-in-the-wayback-machine/.
I have updated my RSS client to make a such call everyday, even for my fav YouTube RSS sources.
Even if 'link rot' gets in a way, this might be insightful to see at least link, or title, or description of the RSS entry. Historians might consider it useful some day.
I have received a response:
I don't think archive.org would be very happy if every nextcloud/news install would request they store the CNN frontpage every hour for example. I think this is better suited in feed creation software since that would know exactly when a feed is updated.