My limited experience is similar to yours I think, but I'm not sure how true this is. If ActivityPub works for these, is it doing a bad job? - Nextcloud, a fed

My limited experience is similar to yours I think, but I'm not sure how true this is. If ActivityPub works for these, is it doing a bad job? - Nextcloud, a federated service for file hosting - PeerTube, a federated service for video streaming - Pixelfed, a piece of social networking software which resembles Instagram (from wikipedia, surely there are more) Or I suppose maybe those count as social apps because they involve public facing posting. I definitely wouldn't use them for privacy, and only for communication with no particular expectation of promptness.