@fediversereport he actually says "your audience" not your social graph, and that's a significant difference which we should note. Because the difference between Mastodon/fedi is that they are primarily social platforms which is about to be confronted by an anti social behemoth when it is allowed to federate.
Many here, sadly including admins think the protocol can preserve this, but like those arguing for search they haven't thought this through or are not considering the evidence.