this process and improves Lemmy’s capability to protect it’s users from spam and brigading
That assumes defederation only happens in those cases. You have an account from lemmy.world, so I guess you trust that instance. You know, the same instance that preemptively defederated from hexbear.net for political reasons. You see the problem?
But will they? This tool promotes blindly trusting another instance block list without due diligence from the admin.