@steve @silverpill @smallcircles @zicklag I think a lot of harm has happened because of the dominance of #Mastodon, and not because of ActivityPub spec's limitations. Mastodon was built as a Twitter clone - an app where users both create and consume the `Note` object type. It ignores all the other object types.
This forced all other ActivityPub apps (eg: Pixelfed) to shoehorn their content into a `Note`. Though, Mastodon is soon going to support `Article` object type.