This argument about consent is fictional. Anyone can create a server on the Fediverse and everyone on the Fediverse is conntected, without their consent.
Bluesky could create a Mastodon server, any commercial entity can create a server and everyone is linked without consent.
The only way to preserve consent on the Fediverse, is to create a server that is not linked to other servers, in which case you don't have to worry about this bridge.