#ActivityPub is super cool once you see it in action.
For instance, you can visit the new StarTrek lemmy server here: https://startrek.website/c/startrek. Looks like a reddit sub with posts, threaded comments, upvotes, &c.
OR you can follow the same server on Mastodon @startrek.
Every thread and comment shows up as a boosted post.
Cool, right? Now, say you find a comment that you want to reply to. Post through your favorite Mastodon app, and that feeds right back to the thread on the #Lemmy server! 🤯
There’s been many instances of fediverse applications that have tried to get into the apple ecosystem, but have been denied because they won’t censor apple’s political opposition. Generally: the apple ecosystem is a system of oppression, built on intentionally defective by design hardware. Many features are not just missing, but missing because the people who control your device don’t want you to have them, not because of some kind of technical constraint.