See, this falls apart when there’s another instance that focuses on solarpunk. When some communities on that instance become more popular and active than the communities in your local instance, you’d want to be subscribed to the solar punk communities on that new instance too. Now, your local feed is only showing you solarpunk communities hosted on slrpnk.net but not solarpunk communities on other instances. This distinction is not meaningful because where a community is hosted can be totally detached from the content. The users you know by handle can also be very active, if not more active, on other instances talking about solarpunk than slrpnk.net.

Unique interests can be already be self-curated by subscribing to certain communities. All apps have the subscribed feed. There’s no need for communities of a certain type to be on one instance.

Edit: typo