@vruz @sam @Arcaik @mastodonmigration @snarfed.org @snarfed you consent to the data being shared by posting it [with public visibility] (otherwise why would you post it).
Saying this is illegal is like saying your mail provider is doing something illegal when you are sending a mail because it 'shares your data' with different mail servers along the way.
But this is what you ask them to do.

Your instance admin should obviously be able to defederate the bridge. (And you to block )