No. Only communities that at least one local user is subscribed to are federated into an instance.

And I realize I made a mistake in the feed names. My local feed is completely empty. My ‘all’ feed is what I was intending to describe with that comment. It is just the communities that either my wife or I have subscribed to. I haven’t done this yet but I was reading about a project that admins can add to their instance that effectively creates a phantom user to subscribe to lots of content all across the fediverse. It’s intended to help bridge the gap between very small instances and the rest of the fediverse by ensuring that your ‘all’ feed actually aggregates content from other instances without requiring you to subscribe.

I’m blanking on the name and can’t find the posts I saved about it, but I’d really like to try it out to make it easier to come across new communities organically without having to hunt them down.