when looking at the Cohost.py source, I found out you can subscribe to Cohost pages using Atom or JSON Feed). maybe everyone knew that already?
https://cohost.org/PAGE-HERE/rss/public.jsonExample
*https://cohost.org/PAGE-HERE/rss/public.atom` Example
you can change .atom to .rss and it will load an XML file that claims to be "application/rss+xml, but i'm not sure that's officially supported (or a completely valid RSS feed) since the profile page doesn't formally link to it as an alternative version of the page (the way sites typically advertise feeds).