Personally, I think this is great but I doubt very much it will catch on. For anything XML related, I convert to JSON [1] and then parse with jq [2], including (especially) my own personal RSS feed.
My opinion is that JSON fulfilled the promise of XML (ubiquitous, self document human readable data) but it came too late for many standards that used XML and now we're kind of stuck with it. JSON has it's problems (not streamable, not easily commentable, any schemas needed are tacked on, etc.) but it's so much easier to work with than anything XML related.
[0] https://www.jsonfeed.org/version/1.1/