>should I be some location and post something, I'd be broadcasting my location, even if that isn't intended

Can you tell me how and where you would broadcast your location via Mastodon? There are no geolocation features in Mastodon.

>It needs to be encrypted, too, because it's the reasonable expectation when private messages and followers-only messages exist.

Has anyone attempted to encrypt a message to 64,000 recipients yet? I don't think restricting a message to followers is an applicable model for e2ee. Direct messages yes, I can see the point in that.