Considering the #TagsPub mess and the fact that it's made by a co-creator of the #ActivityPub protocol: is AP fundamentally incapable of doing consent by default and if so, how to replace it by a private-by-default protocol where every interaction must be authorized by all parts?
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The big problem is that you can request your post to not be further processed by other users or servers, but there is no mechanism to effectively enforce those requests - even the quote post rescissions recently implemented by Mastodon are made in a honor basis.