*Apple News on iOS and macOS no longer supports adding RSS or ATOM feeds from anywhere. Full-stop, period. It will immediately fetch, then reject those feeds and fail to display them, silently without any message or error. I can see in my own server’s log that they make the request using the correct app on iOS and macOS, but then ignore the feed completely; a validated, clean feed. They ONLY support their own, hand-picked, curated feeds now. You can visit a feed in Safari, and it will prompt you to open the feed in Apple News, then silently ignore that request, after fetching the full feed content from the remote site.
Via https://news.slashdot.org/story/19/12/27/2122211/apple-news-no-longer-supports-rss