@matthieu_xyz Bluesky and Threads are an incompatible example because they are a monolithic system, something the fediverse is not.

The crux of my argument was that the network cannot be expected to fully support the feature that would only exist in one server software, especially given how there is no formal standard past ActivityPub to follow on these things to be considered "well behaved".

Since you've mentioned that you do not mind having only a small part of the network supporting this feature then opening a feature request at your relevant software provider - in your case, Mastodon - is the way to go: https://github.com/mastodon/mastodon/issues

Unfortunately with over 3.6k open issues I wouldn't hold my breath so I'd look into one of the faster moving server options, e.g. Firefish, as they are more open to feature suggestions at the moment.