yeah exactly, and users of this CMS are going to care exactly zero what fancy tech it's built with, so it's more important that it works well than it's built with the latest JS framework or the blockchain or whatever sorry do I sound bitter? 😇
Sure, you *can* represent anything with Atom because at the end of the day it’s just XML and you can extend it however you want, but then you also have to convince other people to consume that XML for it to be useful. This is what I meant by actually go try it.
Meanwhile, Pingback has nothing to do with Atom/RSS and has always worked with arbitrary web pages. That too was XML for literally no good reason, so that’s been simplified into the Webmention protocol
Don’t forget that RSS is by definition unable to evolve to include other richer post types than just blog posts. Atom you could start to shoehorn other things into by adding namespaces and such. But does anyone really want to keep writing XML?
Don’t forget posting things other than blog posts and text. You want to post a photo? Sure you could embed that in a blog post I guess. A video? now it’s getting tricky. Maybe use Atom enclosures? Posting multiple photos to be shown as a carousel like instagram?
Sure, RSS/Atom can do a reasonable job of recreating something like the Twitter home timeline. But oh, you wanted to reply to something? Favorite a tweet? There’s nothing in RSS for that.