Well I’m sure there are a number of nice ways of arranging federated delete, including your suggestion, but it seems to me that the issue is guaranteeing a delete across all federated servers where the diversity of software and the openness/opt-out-ness of federation basically ensure something somewhere will not respect a request out of either malice, ignorance or error.
Ultimately, it seems a weird thing to be creating and expecting fediverse platforms in the image of those designed with complete central control over all data and servers. Like we’re still struggling to break out of the mould.
Even if one platform makes a perfect arrangement for something like delete, so long as servers running that platform push to / federate with servers that run something else, where it’s ultimately impossible to tell what they’re running because it’s someone else’s server, there will be broken promises.
I’m interested to hear your response on this actually, because it increasingly seems to me like we haven’t got to terms yet with what decentralisation actually means and how libertarian some of its implications are once you care about these sorts of issues.
I suspect it gets to the point where for social activity some people may start realising that they actually want a centralised body they can hold to account.
And that feeling secure on a decentralised social media platform requires significant structural adjustments, like e2ee, allow-list federation, private spaces, where public spaces are left for more blog like and anonymous interactions.