This is not a “mistake”. This clearly proves they have Apple TV app integration implemented (just turned off). And someone accidentally turned it on.

But they have clearly put in effort and work into adding this functionality.

New functionality doesn’t just happen by mistake.

For Mastodon there is something called Tootpick which allows you to enter your server’s domain and share any content by redirecting the user. For example: https://tootpick.org/#text=https://eventfrontier.com/post/37808. So I’m not quite sure the federated nature argument makes sense. Sure it’s more complicated that a centralized system, but possible regardless.